时间:2021-07-01 10:21:17 帮助过:13人阅读

https://github.com/comehope/front-end-daily-challenges/tree/master/016-colorful-gradient-animated-border
定义 dom,一个容器中包含一些文字:
<div class="box">
    you are my<br>
    FAVORITE
</div>居中显示:
html,
body,
.box {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}设置页面背景色:
body {
    background: #222;
}设置容器和文字样式:
.box {
    color: white;
    font-size: 2.5em;
    width: 10em;
    height: 5em;
    background: #111;
    font-family: sans-serif;
    line-height: 1.5em;
    text-align: center;
    border-radius: 0.2em;
}用伪元素增加一个背板:
.box {
    position: relative;
}
.box::after {
    content: '';
    position: absolute;
    width: 102%;
    height: 104%;
    background-color: orange;
    z-index: -1;
    border-radius: 0.2em;
}把背板设置为渐变色的:
.box::after {
    /*background-color: orange;*/
    background-image: linear-gradient(60deg, aquamarine, cornflowerblue, goldenrod, hotpink, salmon, lightgreen, sandybrown, violet);
}为背板设置动画效果:
.box::after {
    background-size: 300%, 300%;
    animation: animate_bg 5s ease infinite alternate;
}
@keyframes animate_bg {
    0% {
        background-position: 0%, 50%;
    }
    50% {
        background-position: 100%, 50%;
    }
    100% {
        background-position: 0%, 50%;
    }
}最后,再为文字增加变色效果:
.box {
    animation: animate_text 2s linear infinite alternate;
}
@keyframes animate_text {
    from {
        color: lime;
    }
    to {
        color: yellow;
    }
}大功告成!
相关推荐:
如何使用CSS实现一只鸭子头(附代码)
如何使用CSS和混色模式实现loader动画效果(附代码)
以上就是如何使用CSS实现渐变色动画边框的效果(附代码)的详细内容,更多请关注Gxl网其它相关文章!