1.效果图：
HTML代码：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
* {
margin: 0;
padding: 0;
}
html {
height: 100%;
}
body {
height: 100%;
}
.container {
height: 100%;
background-image: linear-gradient(to right, #fbc2eb, #a6c1ee);
}
.login-wrapper {
background-color: #fff;
width: 358px;
height: 588px;
border-radius: 15px;
padding: 0 50px;
position: relative;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
}
.header {
font-size: 38px;
font-weight: bold;
text-align: center;
line-height: 200px;
}
.input-item {
display: block;
width: 100%;
margin-bottom: 20px;
border: 0;
padding: 10px;
border-bottom: 1px solid rgb(128, 125, 125);
font-size: 15px;
outline: none;
}
.input-item:placeholder {
text-transform: uppercase;
}
.btn {
text-align: center;
padding: 10px;
width: 100%;
margin-top: 40px;
background-image: linear-gradient(to right, #a6c1ee, #fbc2eb);
color: #fff;
}
.msg {
text-align: center;
line-height: 88px;
}
a {
text-decoration-line: none;
color: #abc1ee;
}
</style>
</head>
<body>
<div class="container">
<div class="login-wrapper">
<div class="header">Login</div>
<div class="form-wrapper">
<input type="text" name="username" placeholder="username" class="input-item">
<input type="password" name="password" placeholder="password" class="input-item">
<div class="btn">Login</div>
</div>
<div class="msg">
Don't have account?
<a href="#">Sign up</a>
</div>
</div>
</div>
</body>
</html>
2.效果图：
HTML代码：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
body {
background: url('https://cdn.pixabay.com/photo/2018/08/14/13/23/ocean-3605547_1280.jpg') no-repeat;
background-size: 100% 130%;
}
#login_box {
width: 20%;
height: 400px;
background-color: #00000060;
margin: auto;
margin-top: 10%;
text-align: center;
border-radius: 10px;
padding: 50px 50px;
}
h2 {
color: #ffffff90;
margin-top: 5%;
}
#input-box {
margin-top: 5%;
}
span {
color: #fff;
}
input {
border: 0;
width: 60%;
font-size: 15px;
color: #fff;
background: transparent;
border-bottom: 2px solid #fff;
padding: 5px 10px;
outline: none;
margin-top: 10px;
}
button {
margin-top: 50px;
width: 60%;
height: 30px;
border-radius: 10px;
border: 0;
color: #fff;
text-align: center;
line-height: 30px;
font-size: 15px;
background-image: linear-gradient(to right, #30cfd0, #330867);
}
#sign_up {
margin-top: 45%;
margin-left: 60%;
}
a {
color: #b94648;
}
</style>
</head>
<body>
<div id="login_box">
<h2>LOGIN</h2>
<div id="input_box">
<input type="text" placeholder="请输入用户名">
</div>
<div class="input_box">
<input type="password" placeholder="请输入密码">
</div>
<button>登录</button><br>
</div>
</body>
</html>
3.效果图：
HTML代码：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
* {
padding: 0;
margin: 0;
}
html {
height: 100%;
}
body {
background-image: linear-gradient(to bottom right, rgb(114, 135, 254), rgb(130, 88, 186));
}
.login-container {
width: 600px;
height: 315px;
margin: 0 auto;
margin-top: 10%;
border-radius: 15px;
box-shadow: 0 10px 50px 0px rbg(59, 45, 159);
background-color: rgb(95, 76, 194);
}
.left-container {
display: inline-block;
width: 330px;
border-top-left-radius: 15px;
border-bottom-left-radius: 15px;
padding: 60px;
background-image: linear-gradient(to bottom right, rgb(118, 76, 163), rgb(92, 103, 211));
}
.title {
color: #fff;
font-size: 18px;
font-weight: 200;
}
.title span {
border-bottom: 3px solid rgb(237, 221, 22);
}
.input-container {
padding: 20px 0;
}
input {
border: 0;
background: none;
outline: none;
color: #fff;
margin: 20px 0;
display: block;
width: 100%;
padding: 5px 0;
transition: .2s;
border-bottom: 1px solid rgb(199, 191, 219);
}
input:hover {
border-bottom-color: #fff;
}
::-webkit-input-placeholder {
color: rgb(199, 191, 219);
}
.message-container {
font-size: 14px;
transition: .2s;
color: rgb(199, 191, 219);
cursor: pointer;
}
.message-container:hover {
color: #fff;
}
.right-container {
width: 145px;
display: inline-block;
height: calc(100% - 120px);
vertical-align: top;
padding: 60px 0;
}
.regist-container {
text-align: center;
color: #fff;
font-size: 18px;
font-weight: 200;
}
.regist-container span {
border-bottom: 3px solid rgb(237, 221, 22);
}
.action-container {
font-size: 10px;
color: #fff;
text-align: center;
position: relative;
top: 200px;
}
.action-container span {
border: 1px solid rgb(237, 221, 22);
padding: 10px;
display: inline;
line-height: 20px;
border-radius: 20px;
position: absolute;
bottom: 10px;
left: calc(72px - 20px);
transition: .2s;
cursor: pointer;
}
.action-container span:hover {
background-color: rgb(237, 221, 22);
color: rgb(95, 76, 194);
}
</style>
</head>
<body>
<div class="login-container">
<div class="left-container">
<div class="title"><span>登录</span></div>
<div class="input-container">
<input type="text" name="username" placeholder="用户名">
<input type="password" name="password" placeholder="密码">
</div>
<div class="message-container">
<span>忘记密码</span>
</div>
</div>
<div class="right-container">
<div class="regist-container">
<span class="regist">注册</span>
</div>
<div class="action-container">
<span>提交</span>
</div>
</div>
</div>
</body>
</html>
4.效果图：
HTML代码：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
* {
margin: 0;
padding: 0;
}
a {
text-decoration: none;
}
input,
button {
background: transparent;
border: 0;
outline: none;
}
body {
height: 100vh;
background: linear-gradient(#141e30, #243b55);
display: flex;
justify-content: center;
align-items: center;
font-size: 16px;
color: #03e9f4;
}
.loginBox {
width: 400px;
height: 364px;
background-color: #0c1622;
margin: 100px auto;
border-radius: 10px;
box-shadow: 0 15px 25px 0 rgba(0, 0, 0, .6);
padding: 40px;
box-sizing: border-box;
}
h2 {
text-align: center;
color: aliceblue;
margin-bottom: 30px;
font-family: 'Courier New', Courier, monospace;
}
.item {
height: 45px;
border-bottom: 1px solid #fff;
margin-bottom: 40px;
position: relative;
}
.item input {
width: 100%;
height: 100%;
color: #fff;
padding-top: 20px;
box-sizing: border-box;
}
.item input:focus+label,
.item input:valid+label {
top: 0px;
font-size: 2px;
}
.item label {
position: absolute;
left: 0;
top: 12px;
transition: all 0.5s linear;
}
.btn {
padding: 10px 20px;
margin-top: 30px;
color: #03e9f4;
position: relative;
overflow: hidden;
text-transform: uppercase;
letter-spacing: 2px;
left: 35%;
}
.btn:hover {
border-radius: 5px;
color: #fff;
background: #03e9f4;
box-shadow: 0 0 5px 0 #03e9f4,
0 0 25px 0 #03e9f4,
0 0 50px 0 #03e9f4,
0 0 100px 0 #03e9f4;
transition: all 1s linear;
}
.btn>span {
position: absolute;
}
.btn>span:nth-child(1) {
width: 100%;
height: 2px;
background: -webkit-linear-gradient(left, transparent, #03e9f4);
left: -100%;
top: 0px;
animation: line1 1s linear infinite;
}
@keyframes line1 {
50%,
100% {
left: 100%;
}
}
.btn>span:nth-child(2) {
width: 2px;
height: 100%;
background: -webkit-linear-gradient(top, transparent, #03e9f4);
right: 0px;
top: -100%;
animation: line2 1s 0.25s linear infinite;
}
@keyframes line2 {
50%,
100% {
top: 100%;
}
}
.btn>span:nth-child(3) {
width: 100%;
height: 2px;
background: -webkit-linear-gradient(left, #03e9f4, transparent);
left: 100%;
bottom: 0px;
animation: line3 1s 0.75s linear infinite;
}
@keyframes line3 {
50%,
100% {
left: -100%;
}
}
.btn>span:nth-child(4) {
width: 2px;
height: 100%;
background: -webkit-linear-gradient(top, transparent, #03e9f4);
left: 0px;
top: 100%;
animation: line4 1s 1s linear infinite;
}
@keyframes line4 {
50%,
100% {
top: -100%;
}
}
</style>
</head>
<body>
<div class="loginBox">
<h2>login</h2>
<form action="">
<div class="item">
<input type="text" required>
<label for="">userName</label>
</div>
<div class="item">
<input type="password" required>
<label for="">password</label>
</div>
<button class="btn">submit
<span></span>
<span></span>
<span></span>
<span></span>
</button>
</form>
</div>
</body>
</html>
5.效果图：
HTML代码：
<!DOCTYPE html>
<html lang="en">
<!-- https://codepen.io/danielkvist/pen/LYNVyPL -->
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
:root {
/* COLORS */
--white: #e9e9e9;
--gray: #333;
--blue: #0367a6;
--lightblue: #008997;
/* RADII */
--button-radius: 0.7rem;
/* SIZES */
--max-width: 758px;
--max-height: 420px;
font-size: 16px;
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
}
body {
align-items: center;
background-color: var(--white);
background: url("https://res.cloudinary.com/dbhnlktrv/image/upload/v1599997626/background_oeuhe7.jpg");
/* 决定背景图像的位置是在视口内固定，或者随着包含它的区块滚动。*/
/* https://developer.mozilla.org/zh-CN/docs/Web/CSS/background-attachment */
background-attachment: fixed;
background-position: center;
background-repeat: no-repeat;
background-size: cover;
display: grid;
height: 100vh;
place-items: center;
}
.form__title {
font-weight: 300;
margin: 0;
margin-bottom: 1.25rem;
}
.link {
color: var(--gray);
font-size: 0.9rem;
margin: 1.5rem 0;
text-decoration: none;
}
.container {
background-color: var(--white);
border-radius: var(--button-radius);
box-shadow: 0 0.9rem 1.7rem rgba(0, 0, 0, 0.25),
0 0.7rem 0.7rem rgba(0, 0, 0, 0.22);
height: var(--max-height);
max-width: var(--max-width);
overflow: hidden;
position: relative;
width: 100%;
}
.container__form {
height: 100%;
position: absolute;
top: 0;
transition: all 0.6s ease-in-out;
}
.container--signin {
left: 0;
width: 50%;
z-index: 2;
}
.container.right-panel-active .container--signin {
transform: translateX(100%);
}
.container--signup {
left: 0;
opacity: 0;
width: 50%;
z-index: 1;
}
.container.right-panel-active .container--signup {
animation: show 0.6s;
opacity: 1;
transform: translateX(100%);
z-index: 5;
}
.container__overlay {
height: 100%;
left: 50%;
overflow: hidden;
position: absolute;
top: 0;
transition: transform 0.6s ease-in-out;
width: 50%;
z-index: 100;
}
.container.right-panel-active .container__overlay {
transform: translateX(-100%);
}
.overlay {
background-color: var(--lightblue);
background: url("https://cdn.pixabay.com/photo/2018/08/14/13/23/ocean-3605547_1280.jpg");
background-attachment: fixed;
background-position: center;
background-repeat: no-repeat;
background-size: cover;
height: 100%;
left: -100%;
position: relative;
transform: translateX(0);
transition: transform 0.6s ease-in-out;
width: 200%;
}
.container.right-panel-active .overlay {
transform: translateX(50%);
}
.overlay__panel {
align-items: center;
display: flex;
flex-direction: column;
height: 100%;
justify-content: center;
position: absolute;
text-align: center;
top: 0;
transform: translateX(0);
transition: transform 0.6s ease-in-out;
width: 50%;
}
.overlay--left {
transform: translateX(-20%);
}
.container.right-panel-active .overlay--left {
transform: translateX(0);
}
.overlay--right {
right: 0;
transform: translateX(0);
}
.container.right-panel-active .overlay--right {
transform: translateX(20%);
}
.btn {
background-color: var(--blue);
background-image: linear-gradient(90deg, var(--blue) 0%, var(--lightblue) 74%);
border-radius: 20px;
border: 1px solid var(--blue);
color: var(--white);
cursor: pointer;
font-size: 0.8rem;
font-weight: bold;
letter-spacing: 0.1rem;
padding: 0.9rem 4rem;
text-transform: uppercase;
transition: transform 80ms ease-in;
}
.form>.btn {
margin-top: 1.5rem;
}
.btn:active {
transform: scale(0.95);
}
.btn:focus {
outline: none;
}
.form {
background-color: var(--white);
display: flex;
align-items: center;
justify-content: center;
flex-direction: column;
padding: 0 3rem;
height: 100%;
text-align: center;
}
.input {
background-color: #fff;
border: none;
padding: 0.9rem 0.9rem;
margin: 0.5rem 0;
width: 100%;
}
@keyframes show {
0%,
49.99% {
opacity: 0;
z-index: 1;
}
50%,
100% {
opacity: 1;
z-index: 5;
}
}
</style>
</head>
<body>
<div class="container right-panel-active">
<!-- Sign Up -->
<div class="container__form container--signup">
<form action="#" class="form" id="form1">
<h2 class="form__title">Sign Up</h2>
<input type="text" placeholder="User" class="input" />
<input type="email" placeholder="Email" class="input" />
<input type="password" placeholder="Password" class="input" />
<button class="btn">Sign Up</button>
</form>
</div>
<!-- Sign In -->
<div class="container__form container--signin">
<form action="#" class="form" id="form2">
<h2 class="form__title">Sign In</h2>
<input type="email" placeholder="Email" class="input" />
<input type="password" placeholder="Password" class="input" />
<a href="#" class="link">Forgot your password?</a>
<button class="btn">Sign In</button>
</form>
</div>
<!-- Overlay -->
<div class="container__overlay">
<div class="overlay">
<div class="overlay__panel overlay--left">
<button class="btn" id="signIn">Sign In</button>
</div>
<div class="overlay__panel overlay--right">
<button class="btn" id="signUp">Sign Up</button>
</div>
</div>
</div>
</div>
<script>
const signInBtn = document.getElementById("signIn");
const signUpBtn = document.getElementById("signUp");
const fistForm = document.getElementById("form1");
const secondForm = document.getElementById("form2");
const container = document.querySelector(".container");
signInBtn.addEventListener("click", () => {
container.classList.remove("right-panel-active");
});
signUpBtn.addEventListener("click", () => {
container.classList.add("right-panel-active");
});
fistForm.addEventListener("submit", (e) => e.preventDefault());
secondForm.addEventListener("submit", (e) => e.preventDefault());
</script>
</body>
6.效果图：
HTML代码：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
<!-- <link rel="stylesheet" href="text.css" /> -->
</head>
<style>
.all {
width: 800px;
box-shadow: -10px 10px 25px rgba(210, 210, 210, 0.9);
margin: auto;
margin-top: 5%;
display: flex;
border-radius: 35px;
background-color: #ffffff;
height: 550px;
}
.log {
width: 50%;
margin: auto;
}
.reg {
width: 50%;
height: 100%;
margin: auto;
background-color: #20b2aa;
border-radius: 35px;
color: #ffffff;
}
.reg_1 {
text-align: center;
margin: auto;
margin-top: 50%;
}
.reg_1 h2 {
font-weight: 700;
}
.reg_1 p {
margin: 15px 0px 25px 0px;
}
.sig {
width: 70px;
height: 30px;
border-radius: 12px;
background-color: #20b2aa;
border-color: #fff;
color: #ffffff;
}
#tiao {
padding: 0em 0;
}
.reg_1 a {
color: #ffffff;
}
h3 {
font-size: 3em;
color: black;
padding-bottom: 1em;
margin: 0;
text-align: center;
font-family: "Marvel-Regular";
}
.input {
margin: 10px 50px;
width: 300px;
height: 70px;
}
span {
color: #999;
font-size: 0.85em;
padding-bottom: 0.2em;
display: block;
text-transform: uppercase;
margin-bottom: 4px;
}
.input-text {
border: 1px solid #555;
outline-color: #fd9f3e;
width: 90%;
font-size: 1em;
padding: 0.5em;
line-height: inherit;
}
.register-top-grid {
color: black;
padding-bottom: 1em;
margin: 0;
font-family: "Marvel-Regular";
margin: 10px 0;
}
.text-center {
text-align: center;
}
.tijiao {
color: rgb(255, 253, 253);
width: 80px;
height: 35px;
background-color: rgb(241, 52, 10);
border: none;
}
</style>
<body>
<div class="all">
<div class="log">
<div class="register">
<form>
<div class="register-top-grid">
<h3>用户登录</h3>
<div class="input">
<span>用户名 <label style="color: red">* </label></span>
<input
type="text"
v-model="name"
placeholder="请输入用户名"
class="input-text"
/>
</div>
<div class="input">
<span>密码 <label style="color: red">*</label></span>
<input
type="password"
v-model="password"
placeholder="请输入密码"
class="input-text"
/>
</div>
</div>
<div class="text-center">
<input
type="submit"
value="提交"
class="tijiao"
@click="denglu"
/>
</div>
</form>
</div>
</div>
<div class="reg">
<div class="reg_1">
<h2>没有账号？</h2>
<p>立即注册加入我们吧，和我们一起开启旅程吧</p>
<a href="/register.html">
<button type="primary" class="sig">注册</button>
</a>
</div>
</div>
</div>
</body>
</html>
7.效果图：
HTML代码：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<link rel="stylesheet" href="css/style.css" />
</head>
<body>
<div class="box">
<span class="borderLine"></span>
<form>
<h2>登录</h2>
<div class="inputBox">
<input type="text" required="required" />
<span>账号：</span><i></i>
</div>
<div class="inputBox">
<input type="password" required="required" />
<span>密码：</span><i></i>
</div>
<div class="links">
<a href="#">忘记密码</a><a href="#">注册</a>
</div>
<input type="submit" value="登录">
</form>
</div>
</body>
</html>
CSS代码：
/*设置底色*/
*{
margin: 0;
padding: 0;
font-size: 黑体;
box-sizing: border-box;
}
body{
display: flex;
justify-content: center;
align-items: center;
min-height: 100vh;
background: #222;
}
/*设置登录盒子的大小和底色*/
.box{
position:relative;
width: 380px;
height: 420px;
background: #1c1c1c;
border-radius: 8px;
}
/*开启flex布局，换轴*/
.box form{
position:absolute;
inset:4px;
background: #222;
padding: 50px 40px;
border-radius: 8px;
z-index: 2;
display: flex;
flex-direction: column;
}
/*标题文字样式，输入框盒子大小间距*/
.box form h2{
color: #fff;
font-weight: 500;
text-align: center;
letter-spacing: 0.lem;
}
.box form .inputBox{
position: relative;
width: 300px;
margin-top: 35px;
}
/*调整输入框样式*/
.box form .inputBox input{
position: relative;
width: 100%;
padding: 20px 10px 10px;
background: transparent;
outline: none;
border: none;
box-shadow: none;
color: #23242;
font-size: 1em;
letter-spacing: 0.05em;
z-index: 10;
}
/*提示文字样式*/
.box form .inputBox span{
position: absolute;
left: 0;
padding: 20px 0px 10px;
pointer-events: none;
color: #8f8f8f;
font-size: 1em;
letter-spacing: 0.05em;
}
/*输入有效值获取焦点时样式*/
.box form .inputBox input{
transition: 0.5s;
}
.box form .inputBox span{
transition: 0.5s;
}
.box form .inputBox input:valid~span,
.box form .inputBox input:focus~span{
color: #fff;
font-size: 0.75em;
transform: translateY(-34px);
}
/*设置白色下划线，并设置点击穿透*/
.box form .inputBox i{
position: absolute;
left: 0;
bottom: 0;
width: 100%;
height: 2px;
background: #fff;
border-radius: 4px;
overflow: hidden;
transition: 0.5s;
pointer-events: none;
}
/*输入有效值获取焦点时样式*/
.box form .inputBox input:valid~i,
.box form .inputBox input:focus~i{
height: 44px;
}
/*开启flex a链接样式*/
.box form .links{
display: flex;
justify-content: space-between;
}
.box form .links a{
margin: 10px 0;
font-size: 0.75em;
color: #8f8f8f;
text-decoration: none;
}
/*a链接hover时改颜色，注册直接改颜色*/
.box form .links a:hover,
.box form .links a:nth-child(2){
color: #fff;
}
/*修改登录按钮样式*/
.box form input[type="submit"]{
border: none;
outline: none;
padding: 9px 25px;
background: #fff;
cursor: pointer;
font-size: 0.9em;
border-radius: 4px;
font-weight: 600;
width: 100px;
margin-top: 10px;
}
/*登录按钮点击时，透明度80%*/
.box form input[type="submit"]:active{
opacity: 0.8;
}
/*写动画*/
.borderLine{
position: absolute;
top:0;
inset:0;
}
@keyframes animate{
0%{
transform: rotate(0deg);
}
100%{
transform: rotate(360deg);
}
}
/*添加动画*/
.box::before,
.box::after,
.borderLine::before,
.borderLine::after{
content: "";
position: absolute;
top:-50%;
width: 380px;
height: 420px;
background:linear-gradient(
0deg,transparent,transparent,
#45f3ff,#45f3ff,#45f3ff);
z-index: 1;
transform-origin: bottom right;
animation: animate 6s linear infinite;
}
/*添加动画延迟，修改为两种颜色*/
.box::after{
animation-delay: -3s;
}
.borderLine::before{
background: linear-gradient(
0deg,transparent,transparent,
#ff2770,#ff2770,#ff2770);
animation-delay: -1.5s;
}
.borderLine::after{
background: linear-gradient(
0deg,transparent,transparent,
#ff2770,#ff2770,#ff2770);
animation-delay: -4.5s;
}
/*退出隐藏*/
.box{
overflow: hidden;
}
8.效果图：
HTML代码：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="css/logon.css">
<title>登录界面</title>
</head>
<body>
<section>
<!-- 背景颜色 -->
<div class="color"></div>
<div class="color"></div>
<div class="color"></div>
<div class="box">
<!-- 背景圆 -->
<div class="circle" style="--x:0"></div>
<div class="circle" style="--x:1"></div>
<div class="circle" style="--x:2"></div>
<div class="circle" style="--x:3"></div>
<div class="circle" style="--x:4"></div>
<!-- 登录框 -->
<div class="container">
<div class="form">
<h2>登录</h2>
<form>
<div class="inputBox">
<input type="text" placeholder="姓名">
</div>
<div class="inputBox">
<input type="password" placeholder="密码">
</div>
<div class="inputBox">
<input type="submit" value="登录">
</div>
<p class="forget">忘记密码?<a href="#">
点击这里
</a></p>
<p class="forget">没有账户?<a href="#">
注册
</a></p>
</form>
</div>
</div>
</div>
</section>
</body>
</html>
CSS代码：
/* 清除浏览器默认边距，
使边框和内边距的值包含在元素的width和height内 */
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
/* 使用flex布局，让内容垂直和水平居中 */
section {
/* 相对定位 */
position: relative;
overflow: hidden;
display: flex;
justify-content: center;
align-items: center;
min-height: 100vh;
/* linear-gradient() 函数用于创建一个表示两种或多种颜色线性渐变的图片 */
background: linear-gradient(to bottom, #f1f4f9, #dff1ff);
}
/* 背景颜色 */
section .color {
/* 绝对定位 */
position: absolute;
/* 使用filter(滤镜) 属性，给图像设置高斯模糊*/
filter: blur(200px);
}
/* :nth-child(n) 选择器匹配父元素中的第 n 个子元素 */
section .color:nth-child(1) {
top: -350px;
width: 600px;
height: 600px;
background: #ff359b;
}
section .color:nth-child(2) {
bottom: -150px;
left: 100px;
width: 500px;
height: 500px;
background: #fffd87;
}
section .color:nth-child(3) {
bottom: 50px;
right: 100px;
width: 500px;
height: 500px;
background: #00d2ff;
}
.box {
position: relative;
}
/* 背景圆样式 */
.box .circle {
position: absolute;
background: rgba(255, 255, 255, 0.1);
/* backdrop-filter属性为一个元素后面区域添加模糊效果 */
backdrop-filter: blur(5px);
box-shadow: 0 25px 45px rgba(0, 0, 0, 0.1);
border: 1px solid rgba(255, 255, 255, 0.5);
border-right: 1px solid rgba(255, 255, 255, 0.2);
border-bottom: 1px solid rgba(255, 255, 255, 0.2);
border-radius: 50%;
/* 使用filter(滤镜) 属性，改变颜色。
hue-rotate(deg) 给图像应用色相旋转
calc() 函数用于动态计算长度值
var() 函数调用自定义的CSS属性值x*/
filter: hue-rotate(calc(var(--x) * 70deg));
/* 调用动画animate，需要10s完成动画，
linear表示动画从头到尾的速度是相同的，
infinite指定动画应该循环播放无限次*/
animation: animate 10s linear infinite;
/* 动态计算动画延迟几秒播放 */
animation-delay: calc(var(--x) * -1s);
}
/* 背景圆动画 */
@keyframes animate {
0%, 100%, {
transform: translateY(-50px);
}
50% {
transform: translateY(50px);
}
}
.box .circle:nth-child(1) {
top: -50px;
right: -60px;
width: 100px;
height: 100px;
}
.box .circle:nth-child(2) {
top: 150px;
left: -100px;
width: 120px;
height: 120px;
z-index: 2;
}
.box .circle:nth-child(3) {
bottom: 50px;
right: -60px;
width: 80px;
height: 80px;
z-index: 2;
}
.box .circle:nth-child(4) {
bottom: -80px;
left: 100px;
width: 60px;
height: 60px;
}
.box .circle:nth-child(5) {
top: -80px;
left: 140px;
width: 60px;
height: 60px;
}
/* 登录框样式 */
.container {
position: relative;
width: 400px;
min-height: 400px;
background: rgba(255, 255, 255, 0.1);
display: flex;
justify-content: center;
align-items: center;
backdrop-filter: blur(5px);
box-shadow: 0 25px 45px rgba(0, 0, 0, 0.1);
border: 1px solid rgba(255, 255, 255, 0.5);
border-right: 1px solid rgba(255, 255, 255, 0.2);
border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}
.form {
position: relative;
width: 100%;
height: 100%;
padding: 50px;
}
/* 登录标题样式 */
.form h2 {
position: relative;
color: #fff;
font-size: 24px;
font-weight: 600;
letter-spacing: 5px;
margin-bottom: 30px;
cursor: pointer;
}
/* 登录标题的下划线样式 */
.form h2::before {
content: "";
position: absolute;
left: 0;
bottom: -10px;
width: 0px;
height: 3px;
background: #fff;
transition: 0.5s;
}
.form h2:hover:before {
width: 53px;
}
.form .inputBox {
width: 100%;
margin-top: 20px;
}
/* 输入框样式 */
.form .inputBox input {
width: 100%;
padding: 10px 20px;
background: rgba(255, 255, 255, 0.2);
outline: none;
border: none;
border-radius: 30px;
border: 1px solid rgba(255, 255, 255, 0.5);
border-right: 1px solid rgba(255, 255, 255, 0.2);
border-bottom: 1px solid rgba(255, 255, 255, 0.2);
font-size: 16px;
letter-spacing: 1px;
color: #fff;
box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}
.form .inputBox input::placeholder {
color: #fff;
}
/* 登录按钮样式 */
.form .inputBox input[type="submit"] {
background: #fff;
color: #666;
max-width: 100px;
margin-bottom: 20px;
font-weight: 600;
cursor: pointer;
}
.forget {
margin-top: 6px;
color: #fff;
letter-spacing: 1px;
}
.forget a {
color: #fff;
font-weight: 600;
text-decoration: none;
}
