开发工具:Atom
index.html
<!DOCTYPE html>
<html lang="en" dir="ltr">
<head>
<meta charset="utf-8">
<title></title>
<style media="screen">
body{
background-color: black;
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
height: 100vh;
}
a{
position: relative;
display: inline-block;
padding: 15px 30px;
color: #3296f3;
text-transform: uppercase;
letter-spacing: 4px;
text-decoration: none;
font-size: 24px;
overflow: hidden;
transition: 0.2s;
}
a:hover{
color: #255784;
background: #2196f3;
box-shadow: 0 0 10px #2196f3, 0 0 40px #2196f3, 0 0 80px #2196f3;
transition-delay: 1s;
}
a span{
position: absolute;
display: block;
}
a span:nth-child(1){
top: 0;
left: -100%;
width: 100%;
height: 2px;
background: linear-gradient(90deg,transparent,#2196f3);
}
a:hover span:nth-child(1){
left: 100%;
transition: 1s;
}
a span:nth-child(3){
bottom: 0;
right: -100%;
width: 100%;
height: 2px;
background: linear-gradient(270deg,transparent,#2196f3);
}
a:hover span:nth-child(3){
right: 100%;
transition: 1s;
transition-delay: 0.5s;
}
a span:nth-child(2){
top: -100%;
right: 0;;
width: 2px;
height: 100%;
background: linear-gradient(180deg,transparent,#2196f3);
}
a:hover span:nth-child(2){
top: 100%;
transition: 1s;
transition-delay: 0.25s;
}
a span:nth-child(4){
bottom: -100%;
left: 0;
width: 2px;
height: 100%;
background: linear-gradient(360deg,transparent,#2196f3);
}
a:hover span:nth-child(4){
bottom: 100%;
transition: 1s;
transition-delay: 0.75s;
}
</style>
</head>
<body>
<a href="#">
<span></span>
<span></span>
<span></span>
<span></span>
HELLO
</a>
</body>
</html>
教程来自:Online Tutorials(Youtube).