本专栏将会从基础开始，循序渐进，讲解HTML先关知识，也请大家多多支持。
专栏地址: html专栏
1 旋转
1.1 语法
<!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>旋转效果</title>
<style>
img {
width: 250px;
transition: all 2s;
}
img:hover {
/* 顺 */
transform: rotate(360deg);
/* 逆 */
/* transform: rotate(-360deg); */
}
</style>
</head>
<body>
<img src="./images/rotate.png" alt="">
</body>
</html>
1.2 设置圆点
<!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>转换原点</title>
<style>
img {
width: 250px;
border: 1px solid #000;
transition: all 2s;
transform-origin: right bottom;
transform-origin: left bottom;
}
img:hover {
transform: rotate(360deg);
}
</style>
</head>
<body>
<img src="./images/rotate.png" alt="">
</body>
</html>
1.3 多重转换
<!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>多重转换</title>
<style>
.box {
width: 800px;
height: 200px;
border: 1px solid #000;
}
img {
width: 200px;
transition: all 8s;
}
.box:hover img {
/* 边走边转 */
transform: translate(600px) rotate(360deg);
/* 旋转可以改变坐标轴向 */
/* transform: rotate(360deg) translate(600px); */
/* 层叠性 ,所以不能边走边转*/
/* transform: translate(600px);
transform: rotate(360deg); */
}
</style>
</head>
<body>
<div class="box">
<img src="./images/tyre1.png" alt="">
</div>
</body>
</html>
2 缩放
2.1 原理
<!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>缩放效果</title>
<style>
.box {
width: 300px;
height: 210px;
margin: 100px auto;
background-color: pink;
}
.box img {
width: 100%;
transition: all 0.5s;
}
.box:hover img {
/* width: 150%; */
transform: scale(1.2);
transform: scale(0.8);
}
</style>
</head>
<body>
<div class="box">
<img src="./images/product.jpeg" alt="">
</div>
</body>
</html>
2.2 播放按钮案例
<!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>
<style>
* {
margin: 0;
padding: 0;
}
li {
list-style: none;
}
img {
width: 100%;
}
.box {
width: 249px;
height: 210px;
margin: 50px auto;
overflow: hidden;
}
.box p {
color: #3b3b3b;
padding: 10px 10px 0 10px;
}
.box .pic {
position: relative;
}
.box .pic::after {
/* 播放按钮压在图片上面 - 居中 */
position: absolute;
left: 50%;
top: 50%;
/* margin-left: -29px;
margin-top: -29px; */
/* transform: translate(-50%, -50%); */
content: '';
width: 58px;
height: 58px;
background-image: url(./images/play.png);
/* 大图 */
transform: translate(-50%, -50%) scale(5);
/* 透明,看不见 */
opacity: 0;
transition: all .5s;
}
/* lihover的时候, 谁变小pic::after */
.box li:hover .pic::after {
opacity: 1;
transform: translate(-50%, -50%) scale(1);
}
</style>
</head>
<body>
<div class="box">
<ul>
<li>
<div class="pic"><img src="./images/party.jpeg" alt=""></div>
<p>【和平精英】“初火”音乐概念片：四圣觉醒......</p>
</li>
</ul>
</div>
</body>
</html>
3 渐变
<!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>渐变背景</title>
<style>
.box {
width: 300px;
height: 200px;
/* background-image: linear-gradient(
pink,
green,
hotpink
); */
background-image: linear-gradient(
transparent,
rgba(0,0,0, .6)
);
}
</style>
</head>
<body>
<div class="box"></div>
</body>
</html>
3.1 案例1
<!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>产品展示效果</title>
<style>
.box {
position: relative;
}
.box img {
width: 300px;
}
.box .title {
position: absolute;
left: 15px;
bottom: 20px;
z-index: 2;
width: 260px;
color: #fff;
font-size: 20px;
font-weight: 700;
}
.box .mask {
position: absolute;
left: 0;
top: 0;
/* display: none; */
opacity: 0;
width: 300px;
height: 212px;
background-image: linear-gradient(
transparent,
rgba(0,0,0,.6)
);
transition: all .5s;
}
.box:hover .mask {
opacity: 1;
/* display: block; */
}
</style>
</head>
<body>
<div class="box">
<img src="./images/product.jpeg" alt="">
<div class="title">OceanStor Pacific 海量存储斩获2021 Interop金奖</div>
<!-- 渐变背景 mask -->
<div class="mask"></div>
</div>
</body>
</html>
3.2 案例2
- demo.css
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
li {
list-style: none;
}
a {
text-decoration: none;
}
img {
width: 100%;
vertical-align: middle;
}
.box {
width: 1110px;
height: 247px;
margin: 20px auto;
/* background-color: pink; */
}
.box li {
position: relative;
float: left;
width: 350px;
height: 247px;
margin-right: 30px;
overflow: hidden;
}
.box li:last-child {
margin-right: 0;
}
.box .txt {
position: absolute;
left: 0;
bottom: -50px;
width: 350px;
height: auto;
padding: 20px 30px;
z-index: 1;
color: #fff;
transition: transform .5s;
/* transition: all .5s; */
}
.box .txt h4 {
font-size: 14px;
font-weight: 400;
line-height: 2em;
color: #fff;
}
.box .txt h5 {
margin-bottom: 40px;
font-size: 18px;
line-height: 1.5em;
color: #fff;
}
.box .txt p {
color: #fff;
font-size: 14px;
}
.box .txt p .iconfont {
color: #c7000b;
vertical-align: middle;
font-size: 20px;
font-weight: 700;
}
/* 1. 渐变背景的盒子 */
.box .mask {
position: absolute;
left: 0;
top: 0;
width: 350px;
height: 247px;
background-image: linear-gradient(
transparent,
rgba(0,0,0,.6)
);
opacity: 0;
transition: all .5s;
}
/* 2. hover效果 */
/* 2.1 图片缩放 */
.box li .pic img {
transition: all .5s;
}
.box li:hover .pic img {
transform: scale(1.2);
}
/* 2.2 渐变背景显示 */
.box li:hover .mask {
opacity: 1;
}
/* 2.3 文字向上移动 */
.box li:hover .txt {
transform: translateY(-50px);
}
- demo.html
<!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>华为新闻</title>
<link rel="stylesheet" href="./css/demo.css">
</head>
<body>
<div class="box">
<ul>
<li>
<a href="#">
<div class="pic">
<img src="./images/product.jpeg" alt="">
</div>
<div class="txt">
<h4>产品</h4>
<h5>OceanStor Pacific 海量存储斩获2021 Interop金奖</h5>
<p>
<span>了解更多</span>
<i></i>
</p>
</div>
<!-- 添加渐变背景 -->
<div class="mask"></div>
</a>
</li>
<li>
<a href="#">
<div class="pic">
<img src="./images/huawei1.jpeg" alt="">
</div>
<div class="txt">
<h4>行业洞察</h4>
<h5>迈向智能世界2030</h5>
<p>
<span>了解更多</span>
<i></i>
</p>
</div>
<!-- 添加渐变背景 -->
<div class="mask"></div>
</a>
</li>
<li>
<a href="#">
<div class="pic">
<img src="./images/huawei2.jpeg" alt="">
</div>
<div class="txt">
<h4>《ICT新视界》刊首语</h4>
<h5>笃行致远，共建具有获得感、幸福感、安全感的智慧城市</h5>
<p>
<span>了解更多</span>
<i></i>
</p>
</div>
<!-- 添加渐变背景 -->
<div class="mask"></div>
</a>
</li>
</ul>
</div>
</body>
</html>