CSS实现按钮特效,彩虹按钮CSS 函数 conic-gradient() 创建一个由渐变组成的图像,渐变的颜色围绕一
CSS 函数 conic-gradient()
创建一个由渐变组成的图像,渐变的颜色围绕一个中心点旋转(而不是从中心辐射)进行过渡。锥形渐变的例子包括饼图和色轮。conic-gradient()
函数的结果是 <gradient>
数据类型的对象,此对象是一种特殊的 <image>
数据类型。
下面介绍如何通过 conic-gradient()
实现按钮的效果
体验地址:wangzhenhao.github.io/plugin-coll…
完整代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>CSS Conic gradients</title>
</head>
<body>
<style>
* {
padding: 0;
margin: 0;
}
body {
background-color: #000;
display: flex;
align-items: center;
justify-content: center;
height: 100vh;
}
</style>
<style>
@property --roate {
syntax: "<angle>";
initial-value: 0deg;
inherits: false;
}
button {
--bule: #0173ff;
--radius: 50px;
--roate: 0deg;
padding: 20px 30px;
border-radius: var(--radius);
background: var(--bule);
color: #fff;
font-weight: 500;
font-size: 30px;
border: 0;
position: relative;
overflow: hidden;
}
button::before {
content: "";
background: conic-gradient(from var(--roate),
transparent 0%, white 5%, transparent 10%);
position: absolute;
inset: 0;
animation: rotate 2s linear infinite;
}
button::after {
content: "";
background: var(--bule);
position: absolute;
inset: 3px;
border-radius: calc(var(--radius) - 3px);
}
.fancy {
position: absolute;
inset: 0;
/* background: red; */
}
.text {
position: relative;
z-index: 1;
}
@keyframes rotate {
to {
--roate: 360deg
}
}
</style>
<button>
<div class="fancy"></div>
<span class="text">Download For Free</span>
</button>
<style>
.rainbow::before {
background: conic-gradient(from var(--roate),
#fd004c,
#fe9000,
#fff020,
#3edf4b,
#3363ff,
#b102b7,
#fd004c);
animation: rotate 0.8s linear infinite;
transition: opacity 0.5s linear;
opacity: 1;
}
.step::before {
opacity: 0;
}
.rainbow {
background: #1c1b29;
}
.rainbow::after {
background: #1c1b29;
}
</style>
<button class="rainbow" style="margin-left: 20px;">
<div class="fancy"></div>
<span class="text">Download For Free</span>
</button>
<script>
var btn = document.querySelector('.rainbow')
setInterval(() => {
if(btn.classList.contains('step')) {
btn.classList.remove('step')
} else {
btn.classList.add('step')
}
}, 3000)
console.log(btn)
</script>
</body>
</html>
转载自:https://juejin.cn/post/7412906006537175079