该文本是一个HTML文档，展示了一个渐变效果的登录页面。页面使用了CSS样式来创建一个美观的表单，包含用户名和密码输入框，以及登录和注册链接。背景为深色，输入框和按钮采用渐变色，具有动画效果，提升用户体验。
<!DOCTYPE html>
<html lang="zh">
<head>
<meta charset="utf-8">
<title>渐变登录页</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
/* 引入需要的字体 */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700;800;900&display=swap');
* {
margin: 0;
padding: 0;
box-sizing: border-box;
font-family: 'Poppins', sans-serif;
}
body {
display: flex;
justify-content: center;
align-items: center;
min-height: 100vh;
flex-direction: column;
background: #23242a;
}
.box {
position: relative;
width: 380px;
height: 420px;
background: #1c1c1c;
border-radius: 8px;
overflow: hidden;
}
.box::before {
content: '';
z-index: 1;
position: absolute;
top: -50%;
left: -50%;
width: 380px;
height: 420px;
transform-origin: bottom right;
background: linear-gradient(0deg, transparent, #45f3ff, #45f3ff);
animation: animate 6s linear infinite;
}
.box::after {
content: '';
z-index: 1;
position: absolute;
top: -50%;
left: -50%;
width: 380px;
height: 420px;
transform-origin: bottom right;
background: linear-gradient(0deg, transparent, #45f3ff, #45f3ff);
animation: animate 6s linear infinite;
animation-delay: -3s;
}
@keyframes animate {
0% {
transform: rotate(0deg);
}
100% {
transform: rotate(360deg);
}
}
form {
position: absolute;
inset: 2px;
background: #28292d;
padding: 50px 40px;
border-radius: 8px;
z-index: 2;
display: flex;
flex-direction: column;
}
h2 {
color: #45f3ff;
font-weight: 500;
text-align: center;
letter-spacing: 0.1em;
}
.inputBox {
position: relative;
width: 300px;
margin-top: 35px;
}
.inputBox input {
position: relative;
width: 100%;
padding: 20px 10px 10px;
background: transparent;
outline: none;
box-shadow: none;
border: none;
color: #23242a;
font-size: 1em;
letter-spacing: 0.05em;
transition: 0.5s;
z-index: 10;
}
.inputBox span {
position: absolute;
left: 0;
padding: 20px 0px 10px;
pointer-events: none;
font-size: 1em;
color: #8f8f8f;
letter-spacing: 0.05em;
transition: 0.5s;
}
.inputBox input:valid~span,
.inputBox input:focus~span {
color: #45f3ff;
transform: translateX(0px) translateY(-34px);
font-size: 0.75em;
}
.inputBox i {
position: absolute;
left: 0;
bottom: 0;
width: 100%;
height: 2px;
background: #45f3ff;
border-radius: 4px;
overflow: hidden;
transition: 0.5s;
pointer-events: none;
z-index: 9;
}
.inputBox input:valid~i,
.inputBox input:focus~i {
height: 44px;
}
.links {
display: flex;
justify-content: space-between;
}
.links a {
margin: 10px 0;
font-size: 0.75em;
color: #8f8f8f;
text-decoration: beige;
}
.links a:hover,
.links a:nth-child(2) {
color: #45f3ff;
}
input[type="submit"] {
border: none;
outline: none;
padding: 11px 25px;
background: #45f3ff;
cursor: pointer;
border-radius: 4px;
font-weight: 600;
width: 100px;
margin-top: 10px;
}
input[type="submit"]:active {
opacity: 0.8;
}
</style>
</head>
<body>
<div class="box">
<form autocomplete="off">
<h2>Sign in</h2>
<div class="inputBox">
<input type="text" required="required">
<span>UserName</span>
<i></i>
</div>
<div class="inputBox">
<input type="password" required="required">
<span>Password</span>
<i></i>
</div>
<div class="links">
<a href="#">Forgot Password?</a>
<a href="#">Signup</a>
</div>
<input type="submit" value="Login">
</form>
</div>
</body>
</html>
