CSS implements various loading effects with parsing process

Time:2021-10-27

HTML


<div class="spinner"></div>

CSS


.spinner {
  width: 40px;
  height: 40px;
  background-color: #333;

  margin: 100px auto;
  -webkit-animation: sk-rotateplane 1.2s infinite ease-in-out;
  animation: sk-rotateplane 1.2s infinite ease-in-out;
}

@-webkit-keyframes sk-rotateplane {
  0% { -webkit-transform: perspective(120px) }
  50% { -webkit-transform: perspective(120px) rotateY(180deg) }
  100% { -webkit-transform: perspective(120px) rotateY(180deg)  rotateX(180deg) }
}

@keyframes sk-rotateplane {
  0% { 
    transform: perspective(120px) rotateX(0deg) rotateY(0deg);
    -webkit-transform: perspective(120px) rotateX(0deg) rotateY(0deg) 
  } 50% { 
    transform: perspective(120px) rotateX(-180.1deg) rotateY(0deg);
    -webkit-transform: perspective(120px) rotateX(-180.1deg) rotateY(0deg) 
  } 100% { 
    transform: perspective(120px) rotateX(-180deg) rotateY(-179.9deg);
    -webkit-transform: perspective(120px) rotateX(-180deg) rotateY(-179.9deg);
  }
}

Parsing: defining a  divElement, set the side length to 40px, and then set the circular flip animation to realize the loading effect animation

The perspective attribute defines the distance of the 3D element from the view

HTML


<div class="sk-chase">
  <div class="sk-chase-dot"></div>
  <div class="sk-chase-dot"></div>
  <div class="sk-chase-dot"></div>
  <div class="sk-chase-dot"></div>
  <div class="sk-chase-dot"></div>
  <div class="sk-chase-dot"></div>
</div>

CSS


.sk-chase {
  width: 40px;
  height: 40px;
  position: relative;
  animation: sk-chase 2.5s infinite linear both;
}

.sk-chase-dot {
  width: 100%;
  height: 100%;
  position: absolute;
  left: 0;
  top: 0; 
  animation: sk-chase-dot 2.0s infinite ease-in-out both; 
}

.sk-chase-dot:before {
  content: '';
  display: block;
  width: 25%;
  height: 25%;
  background-color: #fff;
  border-radius: 100%;
  animation: sk-chase-dot-before 2.0s infinite ease-in-out both; 
}

.sk-chase-dot:nth-child(1) { animation-delay: -1.1s; }
.sk-chase-dot:nth-child(2) { animation-delay: -1.0s; }
.sk-chase-dot:nth-child(3) { animation-delay: -0.9s; }
.sk-chase-dot:nth-child(4) { animation-delay: -0.8s; }
.sk-chase-dot:nth-child(5) { animation-delay: -0.7s; }
.sk-chase-dot:nth-child(6) { animation-delay: -0.6s; }
.sk-chase-dot:nth-child(1):before { animation-delay: -1.1s; }
.sk-chase-dot:nth-child(2):before { animation-delay: -1.0s; }
.sk-chase-dot:nth-child(3):before { animation-delay: -0.9s; }
.sk-chase-dot:nth-child(4):before { animation-delay: -0.8s; }
.sk-chase-dot:nth-child(5):before { animation-delay: -0.7s; }
.sk-chase-dot:nth-child(6):before { animation-delay: -0.6s; }

@keyframes sk-chase {
  100% { transform: rotate(360deg); } 
}

@keyframes sk-chase-dot {
  80%, 100% { transform: rotate(360deg); } 
}

@keyframes sk-chase-dot-before {
  50% {
    transform: scale(0.4); 
  } 100%, 0% {
    transform: scale(1.0); 
  } 
}

Analysis: define a parent element div containing six white solid dots, add rotation animation, and achieve the effect of appearing in turn by setting different delay times

HTML


<div class="spinner">
  <div class="double-bounce1"></div>
  <div class="double-bounce2"></div>
</div>

CSS


.spinner {
  width: 40px;
  height: 40px;

  position: relative;
  margin: 100px auto;
}

.double-bounce1, .double-bounce2 {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background-color: #333;
  opacity: 0.6;
  position: absolute;
  top: 0;
  left: 0;
  
  -webkit-animation: sk-bounce 2.0s infinite ease-in-out;
  animation: sk-bounce 2.0s infinite ease-in-out;
}

.double-bounce2 {
  -webkit-animation-delay: -1.0s;
  animation-delay: -1.0s;
}

@-webkit-keyframes sk-bounce {
  0%, 100% { -webkit-transform: scale(0.0) }
  50% { -webkit-transform: scale(1.0) }
}

@keyframes sk-bounce {
  0%, 100% { 
    transform: scale(0.0);
    -webkit-transform: scale(0.0);
  } 50% { 
    transform: scale(1.0);
    -webkit-transform: scale(1.0);
  }
}

Analysis: the two sub elements div realize the translucent circle, set the absolute positioning to overlap, and then set the same animation to alternately zoom in and out through different delay times.

HTML


<div class="spinner">
  <div class="rect1"></div>
  <div class="rect2"></div>
  <div class="rect3"></div>
  <div class="rect4"></div>
  <div class="rect5"></div>
</div>

CSS


.spinner {
  margin: 100px auto;
  width: 50px;
  height: 40px;
  text-align: center;
  font-size: 10px;
}

.spinner > div {
  background-color: #333;
  height: 100%;
  width: 6px;
  display: inline-block;
  
  -webkit-animation: sk-stretchdelay 1.2s infinite ease-in-out;
  animation: sk-stretchdelay 1.2s infinite ease-in-out;
}

.spinner .rect2 {
  -webkit-animation-delay: -1.1s;
  animation-delay: -1.1s;
}

.spinner .rect3 {
  -webkit-animation-delay: -1.0s;
  animation-delay: -1.0s;
}

.spinner .rect4 {
  -webkit-animation-delay: -0.9s;
  animation-delay: -0.9s;
}

.spinner .rect5 {
  -webkit-animation-delay: -0.8s;
  animation-delay: -0.8s;
}

@-webkit-keyframes sk-stretchdelay {
  0%, 40%, 100% { -webkit-transform: scaleY(0.4) }  
  20% { -webkit-transform: scaleY(1.0) }
}

@keyframes sk-stretchdelay {
  0%, 40%, 100% { 
    transform: scaleY(0.4);
    -webkit-transform: scaleY(0.4);
  }  20% { 
    transform: scaleY(1.0);
    -webkit-transform: scaleY(1.0);
  }
}

Resolution: in the class named  spinnerThere are five rectangular elements realized by div under the element. Set the scaling of Y axis to achieve the effect of sequential change through different delay times.

HTML


<div class="spinner">
  <div class="cube1"></div>
  <div class="cube2"></div>
</div>

CSS


.cube1, .cube2 {
  background-color: #333;
  width: 15px;
  height: 15px;
  position: absolute;
  top: 0;
  left: 0;
  
  -webkit-animation: sk-cubemove 1.8s infinite ease-in-out;
  animation: sk-cubemove 1.8s infinite ease-in-out;
}

.cube2 {
  -webkit-animation-delay: -0.9s;
  animation-delay: -0.9s;
}

@-webkit-keyframes sk-cubemove {
  25% { -webkit-transform: translateX(42px) rotate(-90deg) scale(0.5) }
  50% { -webkit-transform: translateX(42px) translateY(42px) rotate(-180deg) }
  75% { -webkit-transform: translateX(0px) translateY(42px) rotate(-270deg) scale(0.5) }
  100% { -webkit-transform: rotate(-360deg) }
}

@keyframes sk-cubemove {
  25% { 
    transform: translateX(42px) rotate(-90deg) scale(0.5);
    -webkit-transform: translateX(42px) rotate(-90deg) scale(0.5);
  } 50% { 
    transform: translateX(42px) translateY(42px) rotate(-179deg);
    -webkit-transform: translateX(42px) translateY(42px) rotate(-179deg);
  } 50.1% { 
    transform: translateX(42px) translateY(42px) rotate(-180deg);
    -webkit-transform: translateX(42px) translateY(42px) rotate(-180deg);
  } 75% { 
    transform: translateX(0px) translateY(42px) rotate(-270deg) scale(0.5);
    -webkit-transform: translateX(0px) translateY(42px) rotate(-270deg) scale(0.5);
  } 100% { 
    transform: rotate(-360deg);
    -webkit-transform: rotate(-360deg);
  }
}

Analysis: the two sub elements realize white squares, add animation attributes, set the moving distance and scaling on the x-axis and y-axis respectively, and separate them through different delay times,rorateRotate around the center.

HTML


<div class="spinner"></div>

CSS


.spinner {
  width: 40px;
  height: 40px;
  margin: 100px auto;
  background-color: #333;

  border-radius: 100%;  
  -webkit-animation: sk-scaleout 1.0s infinite ease-in-out;
  animation: sk-scaleout 1.0s infinite ease-in-out;
}

@-webkit-keyframes sk-scaleout {
  0% { -webkit-transform: scale(0) }
  100% {
    -webkit-transform: scale(1.0);
    opacity: 0;
  }
}

@keyframes sk-scaleout {
  0% { 
    -webkit-transform: scale(0);
    transform: scale(0);
  } 100% {
    -webkit-transform: scale(1.0);
    transform: scale(1.0);
    opacity: 0;
  }
}

Resolution: unique  divElement realizes white background dots, and the effect of breathing lamp is realized by setting zoom and transparency.

HTML


<div class="spinner">
  <div class="dot1"></div>
  <div class="dot2"></div>
</div>

CSS


.spinner {
  margin: 100px auto;
  width: 40px;
  height: 40px;
  position: relative;
  text-align: center;
  
  -webkit-animation: sk-rotate 2.0s infinite linear;
  animation: sk-rotate 2.0s infinite linear;
}

.dot1, .dot2 {
  width: 60%;
  height: 60%;
  display: inline-block;
  position: absolute;
  top: 0;
  background-color: #333;
  border-radius: 100%;
  
  -webkit-animation: sk-bounce 2.0s infinite ease-in-out;
  animation: sk-bounce 2.0s infinite ease-in-out;
}

.dot2 {
  top: auto;
  bottom: 0;
  -webkit-animation-delay: -1.0s;
  animation-delay: -1.0s;
}

@-webkit-keyframes sk-rotate { 100% { -webkit-transform: rotate(360deg) }}
@keyframes sk-rotate { 100% { transform: rotate(360deg); -webkit-transform: rotate(360deg) }}

@-webkit-keyframes sk-bounce {
  0%, 100% { -webkit-transform: scale(0.0) }
  50% { -webkit-transform: scale(1.0) }
}

@keyframes sk-bounce {
  0%, 100% { 
    transform: scale(0.0);
    -webkit-transform: scale(0.0);
  } 50% { 
    transform: scale(1.0);
    -webkit-transform: scale(1.0);
  }
}

Analysis: two solid circles do circular scaling and rotation around the center, because they show opposite performance at the same time due to different delay times.

HTML


<div class="spinner">
  <div class="bounce1"></div>
  <div class="bounce2"></div>
  <div class="bounce3"></div>
</div>

CSS


.spinner {
  margin: 100px auto 0;
  width: 70px;
  text-align: center;
}

.spinner > div {
  width: 18px;
  height: 18px;
  background-color: #333;

  border-radius: 100%;
  display: inline-block;
  -webkit-animation: sk-bouncedelay 1.4s infinite ease-in-out both;
  animation: sk-bouncedelay 1.4s infinite ease-in-out both;
}

.spinner .bounce1 {
  -webkit-animation-delay: -0.32s;
  animation-delay: -0.32s;
}

.spinner .bounce2 {
  -webkit-animation-delay: -0.16s;
  animation-delay: -0.16s;
}

@-webkit-keyframes sk-bouncedelay {
  0%, 80%, 100% { -webkit-transform: scale(0) }
  40% { -webkit-transform: scale(1.0) }
}

@keyframes sk-bouncedelay {
  0%, 80%, 100% { 
    -webkit-transform: scale(0);
    transform: scale(0);
  } 40% { 
    -webkit-transform: scale(1.0);
    transform: scale(1.0);
  }
}

Analysis: three solid circles arranged horizontally, linear animation  scaleFrom 0 to 1, by giving them different delay times, they show the effect of alternating in turn.

HTML


<div class="sk-circle">
  <div class="sk-circle1 sk-child"></div>
  <div class="sk-circle2 sk-child"></div>
  <div class="sk-circle3 sk-child"></div>
  <div class="sk-circle4 sk-child"></div>
  <div class="sk-circle5 sk-child"></div>
  <div class="sk-circle6 sk-child"></div>
  <div class="sk-circle7 sk-child"></div>
  <div class="sk-circle8 sk-child"></div>
  <div class="sk-circle9 sk-child"></div>
  <div class="sk-circle10 sk-child"></div>
  <div class="sk-circle11 sk-child"></div>
  <div class="sk-circle12 sk-child"></div>
</div>

CSS


.sk-circle {
  margin: 100px auto;
  width: 40px;
  height: 40px;
  position: relative;
}
.sk-circle .sk-child {
  width: 100%;
  height: 100%;
  position: absolute;
  left: 0;
  top: 0;
}
.sk-circle .sk-child:before {
  content: '';
  display: block;
  margin: 0 auto;
  width: 15%;
  height: 15%;
  background-color: #333;
  border-radius: 100%;
  -webkit-animation: sk-circleBounceDelay 1.2s infinite ease-in-out both;
          animation: sk-circleBounceDelay 1.2s infinite ease-in-out both;
}
.sk-circle .sk-circle2 {
  -webkit-transform: rotate(30deg);
      -ms-transform: rotate(30deg);
          transform: rotate(30deg); }
.sk-circle .sk-circle3 {
  -webkit-transform: rotate(60deg);
      -ms-transform: rotate(60deg);
          transform: rotate(60deg); }
.sk-circle .sk-circle4 {
  -webkit-transform: rotate(90deg);
      -ms-transform: rotate(90deg);
          transform: rotate(90deg); }
.sk-circle .sk-circle5 {
  -webkit-transform: rotate(120deg);
      -ms-transform: rotate(120deg);
          transform: rotate(120deg); }
.sk-circle .sk-circle6 {
  -webkit-transform: rotate(150deg);
      -ms-transform: rotate(150deg);
          transform: rotate(150deg); }
.sk-circle .sk-circle7 {
  -webkit-transform: rotate(180deg);
      -ms-transform: rotate(180deg);
          transform: rotate(180deg); }
.sk-circle .sk-circle8 {
  -webkit-transform: rotate(210deg);
      -ms-transform: rotate(210deg);
          transform: rotate(210deg); }
.sk-circle .sk-circle9 {
  -webkit-transform: rotate(240deg);
      -ms-transform: rotate(240deg);
          transform: rotate(240deg); }
.sk-circle .sk-circle10 {
  -webkit-transform: rotate(270deg);
      -ms-transform: rotate(270deg);
          transform: rotate(270deg); }
.sk-circle .sk-circle11 {
  -webkit-transform: rotate(300deg);
      -ms-transform: rotate(300deg);
          transform: rotate(300deg); }
.sk-circle .sk-circle12 {
  -webkit-transform: rotate(330deg);
      -ms-transform: rotate(330deg);
          transform: rotate(330deg); }
.sk-circle .sk-circle2:before {
  -webkit-animation-delay: -1.1s;
          animation-delay: -1.1s; }
.sk-circle .sk-circle3:before {
  -webkit-animation-delay: -1s;
          animation-delay: -1s; }
.sk-circle .sk-circle4:before {
  -webkit-animation-delay: -0.9s;
          animation-delay: -0.9s; }
.sk-circle .sk-circle5:before {
  -webkit-animation-delay: -0.8s;
          animation-delay: -0.8s; }
.sk-circle .sk-circle6:before {
  -webkit-animation-delay: -0.7s;
          animation-delay: -0.7s; }
.sk-circle .sk-circle7:before {
  -webkit-animation-delay: -0.6s;
          animation-delay: -0.6s; }
.sk-circle .sk-circle8:before {
  -webkit-animation-delay: -0.5s;
          animation-delay: -0.5s; }
.sk-circle .sk-circle9:before {
  -webkit-animation-delay: -0.4s;
          animation-delay: -0.4s; }
.sk-circle .sk-circle10:before {
  -webkit-animation-delay: -0.3s;
          animation-delay: -0.3s; }
.sk-circle .sk-circle11:before {
  -webkit-animation-delay: -0.2s;
          animation-delay: -0.2s; }
.sk-circle .sk-circle12:before {
  -webkit-animation-delay: -0.1s;
          animation-delay: -0.1s; }

@-webkit-keyframes sk-circleBounceDelay {
  0%, 80%, 100% {
    -webkit-transform: scale(0);
            transform: scale(0);
  } 40% {
    -webkit-transform: scale(1);
            transform: scale(1);
  }
}

@keyframes sk-circleBounceDelay {
  0%, 80%, 100% {
    -webkit-transform: scale(0);
            transform: scale(0);
  } 40% {
    -webkit-transform: scale(1);
            transform: scale(1);
  }
}

Analysis: the whole loading effect consists of 12 circle centers. Set different rotations to make them appear circular, and then set different delay times to make them zoom.

HTML


<div class="sk-cube-grid">
  <div class="sk-cube sk-cube1"></div>
  <div class="sk-cube sk-cube2"></div>
  <div class="sk-cube sk-cube3"></div>
  <div class="sk-cube sk-cube4"></div>
  <div class="sk-cube sk-cube5"></div>
  <div class="sk-cube sk-cube6"></div>
  <div class="sk-cube sk-cube7"></div>
  <div class="sk-cube sk-cube8"></div>
  <div class="sk-cube sk-cube9"></div>
</div>

CSS


.sk-cube-grid {
  width: 40px;
  height: 40px;
  margin: 100px auto;
}

.sk-cube-grid .sk-cube {
  width: 33%;
  height: 33%;
  background-color: #333;
  float: left;
  -webkit-animation: sk-cubeGridScaleDelay 1.3s infinite ease-in-out;
          animation: sk-cubeGridScaleDelay 1.3s infinite ease-in-out; 
}
.sk-cube-grid .sk-cube1 {
  -webkit-animation-delay: 0.2s;
          animation-delay: 0.2s; }
.sk-cube-grid .sk-cube2 {
  -webkit-animation-delay: 0.3s;
          animation-delay: 0.3s; }
.sk-cube-grid .sk-cube3 {
  -webkit-animation-delay: 0.4s;
          animation-delay: 0.4s; }
.sk-cube-grid .sk-cube4 {
  -webkit-animation-delay: 0.1s;
          animation-delay: 0.1s; }
.sk-cube-grid .sk-cube5 {
  -webkit-animation-delay: 0.2s;
          animation-delay: 0.2s; }
.sk-cube-grid .sk-cube6 {
  -webkit-animation-delay: 0.3s;
          animation-delay: 0.3s; }
.sk-cube-grid .sk-cube7 {
  -webkit-animation-delay: 0s;
          animation-delay: 0s; }
.sk-cube-grid .sk-cube8 {
  -webkit-animation-delay: 0.1s;
          animation-delay: 0.1s; }
.sk-cube-grid .sk-cube9 {
  -webkit-animation-delay: 0.2s;
          animation-delay: 0.2s; }

@-webkit-keyframes sk-cubeGridScaleDelay {
  0%, 70%, 100% {
    -webkit-transform: scale3D(1, 1, 1);
            transform: scale3D(1, 1, 1);
  } 35% {
    -webkit-transform: scale3D(0, 0, 1);
            transform: scale3D(0, 0, 1); 
  }
}

@keyframes sk-cubeGridScaleDelay {
  0%, 70%, 100% {
    -webkit-transform: scale3D(1, 1, 1);
            transform: scale3D(1, 1, 1);
  } 35% {
    -webkit-transform: scale3D(0, 0, 1);
            transform: scale3D(0, 0, 1);
  } 
}

Resolution: nine blocks pass  gridLayout, form three horizontal and vertical blocks respectively, and set different delay times to make them do linear 3D scaling motion.

HTML


<div class="sk-fading-circle">
  <div class="sk-circle1 sk-circle"></div>
  <div class="sk-circle2 sk-circle"></div>
  <div class="sk-circle3 sk-circle"></div>
  <div class="sk-circle4 sk-circle"></div>
  <div class="sk-circle5 sk-circle"></div>
  <div class="sk-circle6 sk-circle"></div>
  <div class="sk-circle7 sk-circle"></div>
  <div class="sk-circle8 sk-circle"></div>
  <div class="sk-circle9 sk-circle"></div>
  <div class="sk-circle10 sk-circle"></div>
  <div class="sk-circle11 sk-circle"></div>
  <div class="sk-circle12 sk-circle"></div>
</div>

CSS


.sk-fading-circle {
  margin: 100px auto;
  width: 40px;
  height: 40px;
  position: relative;
}

.sk-fading-circle .sk-circle {
  width: 100%;
  height: 100%;
  position: absolute;
  left: 0;
  top: 0;
}

.sk-fading-circle .sk-circle:before {
  content: '';
  display: block;
  margin: 0 auto;
  width: 15%;
  height: 15%;
  background-color: #333;
  border-radius: 100%;
  -webkit-animation: sk-circleFadeDelay 1.2s infinite ease-in-out both;
          animation: sk-circleFadeDelay 1.2s infinite ease-in-out both;
}
.sk-fading-circle .sk-circle2 {
  -webkit-transform: rotate(30deg);
      -ms-transform: rotate(30deg);
          transform: rotate(30deg);
}
.sk-fading-circle .sk-circle3 {
  -webkit-transform: rotate(60deg);
      -ms-transform: rotate(60deg);
          transform: rotate(60deg);
}
.sk-fading-circle .sk-circle4 {
  -webkit-transform: rotate(90deg);
      -ms-transform: rotate(90deg);
          transform: rotate(90deg);
}
.sk-fading-circle .sk-circle5 {
  -webkit-transform: rotate(120deg);
      -ms-transform: rotate(120deg);
          transform: rotate(120deg);
}
.sk-fading-circle .sk-circle6 {
  -webkit-transform: rotate(150deg);
      -ms-transform: rotate(150deg);
          transform: rotate(150deg);
}
.sk-fading-circle .sk-circle7 {
  -webkit-transform: rotate(180deg);
      -ms-transform: rotate(180deg);
          transform: rotate(180deg);
}
.sk-fading-circle .sk-circle8 {
  -webkit-transform: rotate(210deg);
      -ms-transform: rotate(210deg);
          transform: rotate(210deg);
}
.sk-fading-circle .sk-circle9 {
  -webkit-transform: rotate(240deg);
      -ms-transform: rotate(240deg);
          transform: rotate(240deg);
}
.sk-fading-circle .sk-circle10 {
  -webkit-transform: rotate(270deg);
      -ms-transform: rotate(270deg);
          transform: rotate(270deg);
}
.sk-fading-circle .sk-circle11 {
  -webkit-transform: rotate(300deg);
      -ms-transform: rotate(300deg);
          transform: rotate(300deg); 
}
.sk-fading-circle .sk-circle12 {
  -webkit-transform: rotate(330deg);
      -ms-transform: rotate(330deg);
          transform: rotate(330deg); 
}
.sk-fading-circle .sk-circle2:before {
  -webkit-animation-delay: -1.1s;
          animation-delay: -1.1s; 
}
.sk-fading-circle .sk-circle3:before {
  -webkit-animation-delay: -1s;
          animation-delay: -1s; 
}
.sk-fading-circle .sk-circle4:before {
  -webkit-animation-delay: -0.9s;
          animation-delay: -0.9s; 
}
.sk-fading-circle .sk-circle5:before {
  -webkit-animation-delay: -0.8s;
          animation-delay: -0.8s; 
}
.sk-fading-circle .sk-circle6:before {
  -webkit-animation-delay: -0.7s;
          animation-delay: -0.7s; 
}
.sk-fading-circle .sk-circle7:before {
  -webkit-animation-delay: -0.6s;
          animation-delay: -0.6s; 
}
.sk-fading-circle .sk-circle8:before {
  -webkit-animation-delay: -0.5s;
          animation-delay: -0.5s; 
}
.sk-fading-circle .sk-circle9:before {
  -webkit-animation-delay: -0.4s;
          animation-delay: -0.4s;
}
.sk-fading-circle .sk-circle10:before {
  -webkit-animation-delay: -0.3s;
          animation-delay: -0.3s;
}
.sk-fading-circle .sk-circle11:before {
  -webkit-animation-delay: -0.2s;
          animation-delay: -0.2s;
}
.sk-fading-circle .sk-circle12:before {
  -webkit-animation-delay: -0.1s;
          animation-delay: -0.1s;
}

@-webkit-keyframes sk-circleFadeDelay {
  0%, 39%, 100% { opacity: 0; }
  40% { opacity: 1; }
}

@keyframes sk-circleFadeDelay {
  0%, 39%, 100% { opacity: 0; }
  40% { opacity: 1; } 
}

Analysis: the loaded animation is placed 360 degrees by 12 solid color dots, and the rotation and transparency are changed in turn.

HTML


<div class="sk-folding-cube">
  <div class="sk-cube1 sk-cube"></div>
  <div class="sk-cube2 sk-cube"></div>
  <div class="sk-cube4 sk-cube"></div>
  <div class="sk-cube3 sk-cube"></div>
</div>

CSS


.sk-folding-cube {
  margin: 20px auto;
  width: 40px;
  height: 40px;
  position: relative;
  -webkit-transform: rotateZ(45deg);
          transform: rotateZ(45deg);
}

.sk-folding-cube .sk-cube {
  float: left;
  width: 50%;
  height: 50%;
  position: relative;
  -webkit-transform: scale(1.1);
      -ms-transform: scale(1.1);
          transform: scale(1.1); 
}
.sk-folding-cube .sk-cube:before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #333;
  -webkit-animation: sk-foldCubeAngle 2.4s infinite linear both;
          animation: sk-foldCubeAngle 2.4s infinite linear both;
  -webkit-transform-origin: 100% 100%;
      -ms-transform-origin: 100% 100%;
          transform-origin: 100% 100%;
}
.sk-folding-cube .sk-cube2 {
  -webkit-transform: scale(1.1) rotateZ(90deg);
          transform: scale(1.1) rotateZ(90deg);
}
.sk-folding-cube .sk-cube3 {
  -webkit-transform: scale(1.1) rotateZ(180deg);
          transform: scale(1.1) rotateZ(180deg);
}
.sk-folding-cube .sk-cube4 {
  -webkit-transform: scale(1.1) rotateZ(270deg);
          transform: scale(1.1) rotateZ(270deg);
}
.sk-folding-cube .sk-cube2:before {
  -webkit-animation-delay: 0.3s;
          animation-delay: 0.3s;
}
.sk-folding-cube .sk-cube3:before {
  -webkit-animation-delay: 0.6s;
          animation-delay: 0.6s; 
}
.sk-folding-cube .sk-cube4:before {
  -webkit-animation-delay: 0.9s;
          animation-delay: 0.9s;
}
@-webkit-keyframes sk-foldCubeAngle {
  0%, 10% {
    -webkit-transform: perspective(140px) rotateX(-180deg);
            transform: perspective(140px) rotateX(-180deg);
    opacity: 0; 
  } 25%, 75% {
    -webkit-transform: perspective(140px) rotateX(0deg);
            transform: perspective(140px) rotateX(0deg);
    opacity: 1; 
  } 90%, 100% {
    -webkit-transform: perspective(140px) rotateY(180deg);
            transform: perspective(140px) rotateY(180deg);
    opacity: 0; 
  } 
}

@keyframes sk-foldCubeAngle {
  0%, 10% {
    -webkit-transform: perspective(140px) rotateX(-180deg);
            transform: perspective(140px) rotateX(-180deg);
    opacity: 0; 
  } 25%, 75% {
    -webkit-transform: perspective(140px) rotateX(0deg);
            transform: perspective(140px) rotateX(0deg);
    opacity: 1; 
  } 90%, 100% {
    -webkit-transform: perspective(140px) rotateY(180deg);
            transform: perspective(140px) rotateY(180deg);
    opacity: 0; 
  }
}

Analysis: four equilateral squares form a square and rotate the whole 45 degrees. Then each square flips along the X axis through different delay times. set upperspectiveTo have a 3D effect.

Conclusion: the above case principles achieve the effect of animation by setting elements or sub elements with different delay times, including movement, rotation and scaling on X, y and Z axes. With these references and ideas, more type loading effects can be made.

This is the end of this article about CSS implementation of various loading effects with parsing process. For more information about CSS implementation of various loading effects, please search the previous articles of developpaer or continue to browse the relevant articles below. I hope you will support developpaer in the future!