Seven useful techniques of CSS backgroundimage

Time:2020-11-27

Author: Ryan McDermott
Translator: front end wit
Source: GitHub

Today send 5 front-end books, the day after tomorrow, lottery addressclick here https://mp.weixin.qq.com/s/nb…Good luck.

Like it and see it again, wechat search[moving to the world]There is no big factory background to pay attention to this person, but he has a positive attitude. this paperGitHub https://github.com/qq44924588…On has been included, the article has been classified, also sorted out a lot of my documents, and tutorial materials.

Everyone said that the resume did not have a project to write, so I helped you find a project, also attached[build tutorial]

The background image may be one of the CSS properties that all of our front-end developers have used at least a few times in our careers. Most people think that there is nothing unusual about the background image, but after research, the answer is not. So this article has collected seven tips that I think are most useful and have created some code examples.

1. How can the background image fit the view perfectly

It’s easy to fit the background image to the view. You need to use the following CSS:

body {
  background-image: url('https://images.unsplash.com/photo-1573480813647-552e9b7b5394?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=2253&q=80');
  background-repeat: no-repeat;
  background-position: center;
  background-attachment: fixed;
  background-size: cover;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
}

Seven useful techniques of CSS backgroundimage

Example source code:https://codepen.io/duomly/pen…

2. How to use multiple background images in CSS?

What if I want to add more than one image to the background? Multiple background paths can be specified directly in CSS3, as follows:

body {
  background-image: url(https://image.flaticon.com/icons/svg/748/748122.svg), url(https://images.unsplash.com/photo-1478719059408-592965723cbc?ixlib=rb-1.2.1&auto=format&fit=crop&w=2212&q=80);
  background-position: center, top;
  background-repeat: repeat, no-repeat;
  background-size: contain, cover;
}

Seven useful techniques of CSS backgroundimage

Example source code:https://codepen.io/duomly/pen…

3. How to create a triangle background image

Another cool background effect is the triangle background, which is even better when we want to show some completely different options, such as day and night or winter and summer.

The idea is, first create twodiv, then add both backgrounds to it, and then, a seconddivuseclip-pathProperty to draw a triangle.

Seven useful techniques of CSS backgroundimage

html

<body>
  <div class="day"></div>
  <div class="night"></div>
</body>

css

body {
  margin: 0;
  padding: 0;
}

div {
  position: absolute;
  height: 100vh;
  width: 100vw;
}

.day {
  background-image: url("https://images.unsplash.com/photo-1477959858617-67f85cf4f1df?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=2613&q=80");
  background-size: cover;
  background-repeat: no-repeat;
}

.night {
  background-image: url("https://images.unsplash.com/photo-1493540447904-49763eecf55f?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=2250&q=80");
  background-size: cover;
  background-repeat: no-repeat;
  clip-path: polygon(100vw 0, 0% 0vh, 100vw 100vh);
}

Source code:https://codepen.io/duomly/pen…

4. How to add overlay gradient on background image?

Sometimes we want to add some text to the background, but some pictures are too bright to see clearly, so here we need to add some dark music to the background image to highlight the text effect.

For example, you can enhance a sunset image by adding a pink orange gradient or a red to transparent gradient, which is easy to do with a superimposed gradient.

Seven useful techniques of CSS backgroundimage

css

body {
  background-image: 
    linear-gradient(4deg, rgba(38,8,31,0.75) 30%, rgba(213,49,127,0.3) 45%, rgba(232,120,12,0.3) 100%),
    url("https://images.unsplash.com/photo-1503803548695-c2a7b4a5b875?ixlib=rb-1.2.1&auto=format&fit=crop&w=2250&q=80");
  background-size: cover;
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-position: center
}

Source code:https://codepen.io/duomly/pen…

5. How to create a background with dynamic color change

If you have a lot of colors and you want to determine which color is more suitable for the background image, the technique of just dynamically changing the background color is very useful.

css

HTML CSSResult
EDIT ON
@keyframes background-overlay-animation {
  0%   {
      background-image: 
        linear-gradient(4deg, rgba(255,78,36,0.3) 50%, rgba(255,78,36,0.3) 100%), url("https://images.unsplash.com/photo-1559310589-2673bfe16970?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=2250&q=80");
  }
  25%  {
      background-image: 
         linear-gradient(4deg, rgba(213,49,127,0.3) 50%, rgba(213,49,127,0.3) 100%), url("https://images.unsplash.com/photo-1559310589-2673bfe16970?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=2250&q=80");
  }
  50%  {
    background-image: 
       linear-gradient(4deg, rgba(36,182,255,0.3) 50%, rgba(36,182,255,1) 100%),
     url("https://images.unsplash.com/photo-1559310589-2673bfe16970?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=2250&q=80");
  }
  100% {
    background-image: 
        linear-gradient(4deg, rgba(0,255,254,0.3) 50%, rgba(0,255,254,0.3) 100%),
        url("https://images.unsplash.com/photo-1559310589-2673bfe16970?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=2250&q=80");
  }
}

@-webkit-keyframes background-overlay-animation {
  0%   {
      background-image: 
        linear-gradient(4deg, rgba(255,78,36,0.3) 50%, rgba(255,78,36,0.3) 100%)
        url("https://images.unsplash.com/photo-1559310589-2673bfe16970?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=2250&q=80");
  }
  25%  {
      background-image: 
         linear-gradient(4deg, rgba(213,49,127,0.3) 50%, rgba(213,49,127,0.3) 100%),
        url("https://images.unsplash.com/photo-1559310589-2673bfe16970?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=2250&q=80");
  }
  50%  {
    background-image: 
       linear-gradient(4deg, rgba(36,182,255,0.3) 50%, rgba(36,182,255,1) 100%),
     url("https://images.unsplash.com/photo-1559310589-2673bfe16970?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=2250&q=80");
  }
  100% {
    background-image: 
        linear-gradient(4deg, rgba(0,255,254,0.3) 50%, rgba(0,255,254,0.3) 100%),
  

Seven useful techniques of CSS backgroundimage

Source code:https://codepen.io/duomly/pen…

Everyone said that the resume did not have a project to write, so I helped you find a project, also attached[build tutorial]

6. How to make grid background image?

Sometimes there are some need for art or photography projects, they generally require the website to have art information, to be creative. The background of the network is quite creative, and the effects are as follows:

Seven useful techniques of CSS backgroundimage

HTML

<body>
<div class="container">
  <div class="item_img"></div>
  <div class="item"></div>
  <div class="item_img"></div>
  <div class="item"></div>
  <div class="item"></div>
  <div class="item_img"></div>
  <div class="item"></div>
  <div class="item_img"></div>
  <div class="item"></div>
  <div class="item"></div>
  <div class="item_img"></div>
  <div class="item"></div>
  <div class="item_img"></div>
  <div class="item"></div>
  <div class="item_img"></div>
  <div class="item"></div>
</div>
</body>

scss

body {
 margin: 0;
  padding: 0;
}

.container {
  position: absolute;
  width: 100%;
  height: 100%;
  background: black;
  display: grid;
  grid-template-columns: 25fr 30fr 40fr 15fr;
  grid-template-rows: 20fr 45fr 5fr 30fr;
  grid-gap: 20px;
  .item_img {
    background-image: url('https://images.unsplash.com/photo-1499856871958-5b9627545d1a?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=2207&q=80');
  background-repeat: no-repeat;
  background-position: center;
  background-attachment: fixed;
  background-size: cover;
}
}

Source code:https://codepen.io/duomly/pen…

7. How to set background image to text color?

usebackground-imageAnd background-clip Can achieve the beautiful effect of background image on text. In some cases, it can be very useful, especially if we want to create a larger text title that is not as boring as normal colors.

Seven useful techniques of CSS backgroundimage

HTML

<body>
  <h1>Hello world!</h1>
</body>

SCSS

body {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  width: 100%;
  text-align: center;
  min-height: 100vh;
  font-size: 120px;
  font-family:Arial, Helvetica, sans-serif;
}

h1 {
   background-image: url("https://images.unsplash.com/photo-1462275646964-a0e3386b89fa?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=2600&q=80");
  background-clip: text;
  -webkit-background-clip: text;
  color: transparent;
}

Source code:https://codepen.io/duomly/pen…


It is impossible to know the possible bugs after code deployment in real time. In order to solve these bugs afterwards, we spent a lot of time on log debugging. By the way, we recommend a good bug monitoring toolFundebug

Original text:https://dev.to/duomly/discove…


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The article is updated every week. You can search “big move world” for the first time to read and urge the change (one or two articles earlier than the blog). This article is GitHubhttps://github.com/qq449245884/xiaozhiI have collected many documents and I have welcomed Star and perfect. You can review the test points and pay attention to the official account.welfareYou can see the benefits, you know.

Seven useful techniques of CSS backgroundimage

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