```
<!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>
</head>
<body>
<div class="container">
<div class="tit">登錄</div>
<input type="text" placeholder="賬號">
<input type="password" placeholder="密碼">
<button>登錄</button>
<span>沒有賬號？<a href="#">去注冊</a></span>
</div>
<div class="square">
<ul>
<li></li>
<li></li>
<li></li>
<li></li>
<li></li>
</ul>
</div>
<div class="circle">
<ul>
<li></li>
<li></li>
<li></li>
<li></li>
<li></li>
</ul>
</div>
<style>
* {
/* 初始化 */
margin: 0;
padding: 0;
}
body {
/* 100%窗口高度 */
height: 100vh;
/* 彈性布局 居中 */
display: flex;
justify-content: center;
align-items: center;
/* 漸變背景 */
background: linear-gradient(200deg, #e3c5eb, #a9c1ed);
/* 溢出隱藏 */
overflow: hidden;
}
.container {
/* 相對定位 */
position: relative;
z-index: 1;
background-color: #fff;
border-radius: 15px;
display: flex;
flex-direction: column;
align-items: center;
width: 350px;
height: 500px;
/* 陰影 */
box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}
.container .tit {
font-size: 26px;
margin: 65px auto 70px auto;
}
.container input {
width: 280px;
height: 30px;
text-indent: 8px;
border: none;
border-bottom: 1px solid #ddd;
margin: 12px auto;
outline: none;
}
.container button {
width: 280px;
height: 40px;
margin: 35px auto 40px auto;
border: none;
background: linear-gradient(-200deg, #fac0e7, #aac2ee);
color: #fff;
letter-spacing: 8px;
border-radius: 10px;
font-weight: bold;
cursor: pointer;
/* 動畫過渡 */
transition: 0.5s;
}
.container button:hover {
background: linear-gradient(-200deg, #aac2ee, #fac0e7);
background-position-x: -280px;
}
.container span {
font-size: 14px;
}
.container a {
color: plum;
text-decoration: none;
}
ul li {
/* 絕對定位 */
position: absolute;
border: 1px solid #fff;
background-color: #fff;
width: 30px;
height: 30px;
list-style: none;
opacity: 0;
}
.square li {
top: 40vh;
left: 60vw;
/* 執行動畫：動畫名 時長 線性的 無限次播放 */
animation: square 10s linear infinite;
}
.square li:nth-child(2) {
top: 80vh;
left: 10vw;
/* 設置動畫延遲時間 */
animation-delay: 2s;
}
.square li:nth-child(3) {
top: 80vh;
left: 85vw;
animation-delay: 4s;
}
.square li:nth-child(4) {
top: 10vh;
left: 70vw;
animation-delay: 6s;
}
.square li:nth-child(5) {
top: 10vh;
left: 10vw;
animation-delay: 8s;
}
.circle li {
bottom: 0;
left: 15vw;
/* 執行動畫：動畫名 時長 線性的 無限次播放 */
animation: circle 10s linear infinite;
}
.circle li:nth-child(2) {
left: 35vw;
/* 設置動畫延遲時間 */
animation-delay: 2s;
}
.circle li:nth-child(3) {
left: 55vw;
animation-delay: 6s;
}
.circle li:nth-child(4) {
left: 75vw;
animation-delay: 4s;
}
.circle li:nth-child(5) {
left: 90vw;
animation-delay: 8s;
}
/* 定義動畫 */
@keyframes square {
0% {
transform: scale(0) rotateY(0deg);
opacity: 1;
}
100% {
transform: scale(5) rotateY(1000deg);
opacity: 0;
}
}
@keyframes circle {
0% {
transform: scale(0) rotate(0deg);
opacity: 1;
bottom: 0;
border-radius: 0;
}
100% {
transform: scale(5) rotate(1000deg);
opacity: 0;
bottom: 90vh;
border-radius: 50%;
}
}
</style>
<script>
</script>
</body>
</html>
```
