巧妙利用一个技术更快更好的布局：
1.margin负值的运用
2.文字围绕浮动元素
3.行内块的巧妙运用
4.css三角强化
7.1 margin负值运用
1.让每个盒子的margin值往左侧移动-1px正好压住相邻盒子的边框
2.鼠标经过某个盒子的时候,提高当前盒子的层级即可(如果没有定位,则加相对定位(保留位置) , 如果有定位,则加 z-index)
【示例代码】
<!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>
ul li {
position: relative;
float: left;
list-style: none;
width: 150px;
height: 200px;
border: 1px solid red;
margin-left: -1px;
}
ul li:hover {
z-index: 1;
border: 1px solid blue;
}
</style>
</head>
<body>
<ul>
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
<li>5</li>
</ul>
</body>
</html>
7.2文字围绕浮动元素
巧妙运用浮动元素不会压住文字的特性
【示例代码】
<!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;
}
.b {
width: 300px;
height: 70px;
background-color: pink;
margin: 100px auto;
padding: 5px;
}
.p {
float: left;
width: 120px;
height: 60px;
margin-right: 5px;
}
.p img {
width: 100%;
}
</style>
</head>
<body>
<div class="b">
<div class="p">
<img src="images/img.png" alt="">
</div>
<p>【集锦】热身赛-巴西0-1秘鲁 内马尔替补两人血染赛场</p>
</div>
</body>
</html>
7.3行内块巧妙运用
如何使页码在页面中间显示:
1.把这些链接盒子转换为行内块元素，然后给父级指定 text-align: center;
2.利用行内块元素中间有缝隙,并且给父级添加text-align: center;行内块元素会水平会居中
【示例代码】
<!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;
}
.box {
text-align: center;
}
.box a {
display: inline-block;
width: 36px;
height: 36px;
background-color: #f7f7f7;
border: 1px solid #ccc;
line-height: 36px;
text-decoration: none;
color: #333;
font-size: 14px;
}
.box .pr {
width: 85px;
}
.box .sp {
background-color: #fff;
border: 0;
}
.box input {
height: 36px;
width: 45px;
border: 1px solid #ccc;
outline: none;
}
.box button {
width: 60px;
height: 36px;
background-color: #f7f7f7;
border: 1px solid #ccc;
}
</style>
</head>
<body>
<div class="box">
<a href="#" class="pr"><<上一页</a>
<a href="#">1</a>
<a href="#" class="sp">2</a>
<a href="#">3</a>
<a href="#">4</a>
<a href="#">5</a>
<a href="#" class="sp">...</a>
<a href="#" class="pr">下一页>></a>
到第
<input type="text">
页
<button>确定</button>
</div>
</body>
</html>
7.4 CSS三角强化
语法：
width: 0;
height: 0;
/* 1.只保留右边的边框有颜色 */
border-color: transparent skyblue transparent transparent;
/* 2.样式都是solid */
border-style: solid;
/* 3.上边框宽度要大,右边框宽度稍小,其余边框为0 */
border-width: 100px 50px 0 0;
【示例代码】
<!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>
.prc {
width: 160px;
height: 24px;
border: 1px solid red;
margin: 0 auto;
line-height: 24px;
}
.miaosha {
position: relative;
float: left;
width: 90px;
height: 100%;
background-color: red;
text-align: center;
color: #fff;
font-weight: 700;
margin-right: 8px;
}
.miaosha i {
position: absolute;
right: 0;
top: 0;
width: 0;
height: 0;
border-color: transparent #fff transparent transparent;
border-style: solid;
border-width: 24px 10px 0 0;
}
.de {
font-size: 12px;
color: gray;
text-decoration: line-through;
}
</style>
</head>
<body>
<div class="prc">
<span class="miaosha">
￥1650
<i></i>
</span>
<span class="de">￥5650</span>
</div>
</body>
</html>
