<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">
<title>边框跑马霓虹灯效按钮</title>
<style>
* {
padding: 0;
margin: 0;
user-select: none;
box-sizing: border-box;
}
html,
body {
height: 100vh;
}
</style>
<style>
/* 全局色表 */
:root {
--color-bg: #202020;
--color-btn1: #f556e0;
--color-btn2: #5182f7;
}
body {
display: flex;
background: var(--color-bg);
align-items: center;
justify-content: center;
}
.btn {
width: 200px;
height: 50px;
margin: 20px;
background: transparent;
border: none;
font-size: 24px;
letter-spacing: 4px;
transition: 0.3s;
/* 倒影。通过遮罩透明度变化实现近处明亮远处黯淡的效果 */
-webkit-box-reflect: below 1px linear-gradient(to bottom, transparent, rgba(0, 0, 0, 0.3));
}
.btn:nth-child(1) {
color: var(--color-btn1);
}
.btn:nth-child(2) {
color: var(--color-btn2);
}
.btn:focus {
outline: none;
}
</style>
<!-- 按钮悬停样式 -->
<style>
.btn:hover {
color: var(--color-bg);
}
.btn:nth-child(1):hover {
background: var(--color-btn1);
/* 多层阴影增加发光效果的层次感 */
box-shadow: 0 0 10px var(--color-btn1),
0 0 25px var(--color-btn1),
0 0 50px var(--color-btn1),
0 0 100px var(--color-btn1);
}
.btn:nth-child(2):hover {
background: var(--color-btn2);
box-shadow: 0 0 10px var(--color-btn2),
0 0 25px var(--color-btn2),
0 0 50px var(--color-btn2),
0 0 100px var(--color-btn2);
}
</style>
<!-- 边框跑马样式 -->
<style>
.btn {
position: relative;
overflow: hidden;
}
.btn span {
position: absolute;
display: block;
}
/* 下面是各条边框位置与动画设置，通过位置和动画时间差实现跑马效果 */
.btn span:nth-child(1) {
top: 0;
left: -100%;
width: 100%;
height: 2px;
animation: animate1 1s linear infinite;
animation-delay: 0s;
}
@keyframes animate1 {
0% {
left: -100%;
}
50%,
100% {
left: 100%;
}
}
.btn span:nth-child(2) {
top: -100%;
right: 0;
width: 2px;
height: 100%;
animation: animate2 1s linear infinite;
animation-delay: 0.25s;
}
@keyframes animate2 {
0% {
top: -100%;
}
50%,
100% {
top: 100%;
}
}
.btn span:nth-child(3) {
bottom: 0;
right: -100%;
width: 100%;
height: 2px;
animation: animate3 1s linear infinite;
animation-delay: 0.5s;
}
@keyframes animate3 {
0% {
right: -100%;
}
50%,
100% {
right: 100%;
}
}
.btn span:nth-child(4) {
bottom: -100%;
left: 0;
width: 2px;
height: 100%;
animation: animate4 1s linear infinite;
animation-delay: 0.75s;
}
@keyframes animate4 {
0% {
bottom: -100%;
}
50%,
100% {
bottom: 100%;
}
}
/* 下面是各条边框颜色设置 */
.btn:nth-child(1) span:nth-child(1) {
background: linear-gradient(to right, transparent, var(--color-btn1));
}
.btn:nth-child(2) span:nth-child(1) {
background: linear-gradient(to right, transparent, var(--color-btn2));
}
.btn:nth-child(1) span:nth-child(2) {
background: linear-gradient(to bottom, transparent, var(--color-btn1));
}
.btn:nth-child(2) span:nth-child(2) {
background: linear-gradient(to bottom, transparent, var(--color-btn2));
}
.btn:nth-child(1) span:nth-child(3) {
background: linear-gradient(to left, transparent, var(--color-btn1));
}
.btn:nth-child(2) span:nth-child(3) {
background: linear-gradient(to left, transparent, var(--color-btn2));
}
.btn:nth-child(1) span:nth-child(4) {
background: linear-gradient(to top, transparent, var(--color-btn1));
}
.btn:nth-child(2) span:nth-child(4) {
background: linear-gradient(to top, transparent, var(--color-btn2));
}
</style>
</head>
<body>
<!-- button中四个span元素作为上下左右四条流动的边框 -->
<button class="btn">
<span></span>
<span></span>
<span></span>
<span></span>
BUTTON
</button>
<button class="btn">
<span></span>
<span></span>
<span></span>
<span></span>
BUTTON
</button>
</body>
</html>
更多例程可以参考下面代码仓库：
https://github.com/NaisuXu/front-end-web-examples
标签中一个单词的颜色