该文本是一个HTML文档,包含一个折叠式用户登录表单。使用CSS变量定义样式,确保响应式设计。表单包括用户名和密码输入框,具有动态效果和交互性。整体设计注重用户体验,使用了现代的布局和样式技术。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>折叠登录页</title>
<style>
@import url("https://fonts.googleapis.com/css?family=Roboto:400,700&display=swap");
:root {
--space-root: 1rem;
--space-xs: calc(var(--space-root) / 2);
--space-s: calc(var(--space-root) / 1.5);
--space-m: var(--space-root);
--space-l: calc(var(--space-root) * 1.5);
--space-xl: calc(var(--space-root) * 2);
--color-primary: mediumslateblue;
--color-secondary: black;
--color-tertiary: hotpink;
--base-border-radius: 0.25rem;
--ease: cubic-bezier(0.075, 0.82, 0.165, 1);
--duration: 350ms;
--font-family: "Roboto", sans-serif;
--font-size: 1.25rem;
}
* {
box-sizing: border-box;
}
body {
display: grid;
place-items: center;
margin: 0;
height: 100vh;
padding: var(--space-m);
font-size: var(--font-size);
font-family: var(--font-family);
line-height: 1.2;
background-color: var(--color-tertiary);
}
a {
color: var(--color-primary);
}
a:focus {
color: var(--color-secondary);
}
h2 {
font-weight: 700;
font-size: calc(var(--font-size) * 1.5);
}
.form {
position: relative;
width: 100%;
max-width: 450px;
margin: 0 auto;
transform: skewY(-5deg) translateY(10%) scale(0.94);
transition: box-shadow var(--duration) var(--ease), transform var(--duration) var(--ease);
}
.form:before,
.form:after {
content: "";
position: absolute;
pointer-events: none;
background-color: #ebebeb;
width: 25%;
height: 100%;
transition: background-color var(--duration) var(--ease), transform var(--duration) var(--ease);
}
.form:before {
top: 0;
right: calc(100% - 1px);
transform-origin: 100% 100%;
transform: skewY(-35deg) scaleX(-1);
z-index: -1;
}
.form:after {
top: 0;
left: calc(100% - 1px);
transform-origin: 0 0;
transform: skewY(-35deg) scaleX(-1);
z-index: 2;
}
.form:hover,
.form:focus-within {
transform: scale(1.0001);
box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.1);
}
.form:hover:before,
.form:hover:after,
.form:focus-within:before,
.form:focus-within:after {
background-color: white;
transform: skewY(0);
}
.form-inner {
padding: var(--space-xl);
background-color: white;
z-index: 1;
}
.form-inner > * + * {
margin-top: var(--space-xl);
}
.input-wrapper:focus-within label {
color: var(--color-secondary);
}
.input-wrapper:focus-within .icon {
background-color: var(--color-secondary);
}
.input-wrapper:focus-within input {
border-color: var(--color-secondary);
}
.input-wrapper + .input-wrapper {
margin-top: var(--space-l);
}
.input-group {
position: relative;
}
.input-group input {
border-radius: var(--base-border-radius);
padding-left: calc(var(--space-s) + 60px);
}
.input-group .icon {
position: absolute;
top: 0;
left: 0;
height: 100%;
border-top-left-radius: var(--base-border-radius);
border-bottom-left-radius: var(--base-border-radius);
pointer-events: none;
}
label {
font-size: calc(var(--font-size) / 1.65);
font-weight: 700;
text-transform: uppercase;
letter-spacing: 0.065rem;
display: block;
margin-bottom: var(--space-xs);
color: var(--color-primary);
}
.icon {
display: flex;
align-items: center;
flex: 0 1 auto;
padding: var(--space-m);
background-color: var(--color-primary);
}
.icon svg {
width: 1.25em;
height: 1.25em;
fill: white;
pointer-events: none;
user-select: none;
transition: transform var(--duration) var(--ease);
}
input {
flex: 1 1 0;
width: 100%;
outline: none;
padding: var(--space-m);
font-size: var(--font-size);
font-family: var(--font-family);
color: var(--color-secondary);
border: 2px solid var(--color-primary);
}
input:focus {
color: var(--color-primary);
}
.btn-group {
display: flex;
align-items: center;
justify-content: space-between;
}
.btn-group > * + * {
margin-left: var(--space-s);
}
.btn {
position: relative;
overflow: hidden;
display: flex;
align-items: center;
justify-content: space-between;
outline: none;
padding: var(--space-m) var(--space-l);
cursor: pointer;
border: 2px solid transparent;
border-radius: var(--base-border-radius);
}
.btn--primary {
font-size: calc(var(--font-size) / 1.65);
font-weight: 700;
text-transform: uppercase;
letter-spacing: 0.065rem;
background-color: var(--color-primary);
border-color: var(--color-primary);
color: white;
}
.btn--primary:focus {
background-color: var(--color-secondary);
border-color: var(--color-secondary);
}
.btn--text {
font-size: calc(var(--font-size) / 1.5);
padding: 0;
}
</style>
</head>
<body>
<form class="form" onsubmit="return false" autocomplete="off">
<div class="form-inner">
<h2>User Login</h2>
<div class="input-wrapper">
<label for="login-username">Username</label>
<div class="input-group">
<span class="icon">
<svg viewBox="0 0 24 24">
<path d="M12,4A4,4 0 0,1 16,8A4,4 0 0,1 12,12A4,4 0 0,1 8,8A4,4 0 0,1 12,4M12,14C16.42,14 20,15.79 20,18V20H4V18C4,15.79 7.58,14 12,14Z"></path>
</svg>
</span>
<input type="text" id="login-username" data-lpignore="true" />
</div>
</div>
<div class="input-wrapper">
<label for="login-password">Password</label>
<div class="input-group">
<span class="icon">
<svg viewBox="0 0 24 24">
<path d="M11.83,1.73C8.43,1.79 6.23,3.32 6.23,3.32C5.95,3.5 5.88,3.91 6.07,4.19C6.27,4.5 6.66,4.55 6.96,4.34C6.96,4.34 11.27,1.15 17.46,4.38C17.75,4.55 18.14,4.45 18.31,4.15C18.5,3.85 18.37,3.47 18.03,3.28C16.36,2.4 14.78,1.96 13.36,1.8C12.83,1.74 12.32,1.72 11.83,1.73M12.22,4.34C6.26,4.26 3.41,9.05 3.41,9.05C3.22,9.34 3.3,9.72 3.58,9.91C3.87,10.1 4.26,10 4.5,9.68C4.5,9.68 6.92,5.5 12.2,5.59C17.5,5.66 19.82,9.65 19.82,9.65C20,9.94 20.38,10.04 20.68,9.87C21,9.69 21.07,9.31 20.9,9C20.9,9 18.15,4.42 12.22,4.34M11.5,6.82C9.82,6.94 8.21,7.55 7,8.56C4.62,10.53 3.1,14.14 4.77,19C4.88,19.33 5.24,19.5 5.57,19.39C5.89,19.28 6.07,18.92 5.95,18.6V18.6C4.41,14.13 5.78,11.2 7.8,9.5C9.77,7.89 13.25,7.5 15.84,9.1C17.11,9.9 18.1,11.28 18.6,12.64C19.11,14 19.08,15.32 18.67,15.94C18.25,16.59 17.4,16.83 16.65,16.64C15.9,16.45 15.29,15.91 15.26,14.77C15.23,13.06 13.89,12 12.5,11.84C11.16,11.68 9.61,12.4 9.21,14C8.45,16.92 10.36,21.07 14.78,22.45C15.11,22.55 15.46,22.37 15.57,22.04C15.67,21.71 15.5,21.35 15.15,21.25C11.32,20.06 9.87,16.43 10.42,14.29C10.66,13.33 11.5,13 12.38,13.08C13.25,13.18 14,13.7 14,14.79C14.05,16.43 15.12,17.54 16.34,17.85C17.56,18.16 18.97,17.77 19.72,16.62C20.5,15.45 20.37,13.8 19.78,12.21C19.18,10.61 18.07,9.03 16.5,8.04C14.96,7.08 13.19,6.7 11.5,6.82M11.86,9.25V9.26C10.08,9.32 8.3,10.24 7.28,12.18C5.96,14.67 6.56,17.21 7.44,19.04C8.33,20.88 9.54,22.1 9.54,22.1C9.78,22.35 10.17,22.35 10.42,22.11C10.67,21.87 10.67,21.5 10.43,21.23C10.43,21.23 9.36,20.13 8.57,18.5C7.78,16.87 7.3,14.81 8.38,12.77C9.5,10.67 11.5,10.16 13.26,10.67C15.04,11.19 16.53,12.74 16.5,15.03C16.46,15.38 16.71,15.68 17.06,15.7C17.4,15.73 17.7,15.47 17.73,15.06C17.79,12.2 15.87,10.13 13.61,9.47C13.04,9.31 12.45,9.23 11.86,9.25M12.08,14.25C11.73,14.26 11.46,14.55 11.47,14.89C11.47,14.89 11.5,16.37 12.31,17.8C13.15,19.23 14.93,20.59 18.03,20.3C18.37,20.28 18.64,20 18.62,19.64C18.6,19.29 18.3,19.03 17.91,19.06C15.19,19.31 14.04,18.28 13.39,17.17C12.74,16.07 12.72,14.88 12.72,14.88C12.72,14.53 12.44,14.25 12.08,14.25Z"></path>
</svg>
</span>
<input type="password" id="login-password" data-lpignore="true" />
</div>
</div>
<div class="btn-group">
<button class="btn btn--primary">Sign in</button>
<a class="btn--text" href="#0">Forgot password?</a>
</div>
</div>
</form>
</body>
</html>