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HTML
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>文本动画登录表单</title>
<link rel="stylesheet" href="./css/index.css">
</head>
<body>
<div id="app">
<div class="login">
<form>
<div class="input-item">
<input type="text" name="" required="">
<label>Username</label>
</div>
<div class="input-item">
<input type="password" name="" required="">
<label>Password</label>
</div>
<div class="action">
<button>Login</button>
</div>
</form>
</div>
</div>
</body>
</html>
CSS
* {
padding: 0px;
margin: 0px;
}
#app {
height: 100vh;
width: 100%;
background-color: #202020;
}
.login {
position: absolute;
top: 50%;
left: 50%;
width: 400px;
padding: 40px;
transform: translate(-50%, -50%);
background: #202020;
box-sizing: border-box;
box-shadow: 0 15px 25px rgba(0, 0, 0, 0.6);
border-radius: 10px;
}
.login .input-item {
position: relative;
}
.login .input-item input {
width: 100%;
padding: 10px 0;
font-size: 16px;
color: #666;
margin-bottom: 30px;
border: none;
border-bottom: 1px solid #666;
outline: none;
background: transparent;
}
.login .input-item label {
position: absolute;
top: 0;
left: 0;
padding: 10px 0;
font-size: 16px;
color: #666;
pointer-events: none;
transition: .5s;
}
.login .input-item input:focus~label,
.login .input-item input:valid~label {
top: -20px;
left: 0;
color: #e5e5e5;
font-size: 12px;
}
.action button {
width: 100%;
border: 1px solid #dcdfe6;
border-radius: 4px;
cursor: pointer;
transition: 0.1s;
padding: 8px 15px;
color: #fff;
background-color: #409eff;
border-color: #409eff;
}
.action button:hover {
background-color: rgba(64, 160, 255, 0.7);
}
.action button:active {
background-color: rgba(64, 160, 255, 0.8);
}