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CSS 移动弹性布局

最编程 2024-05-04 17:28:50
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一级标题

二倍图

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>背景图片</title>
    <style>
        div{
            width: 500px;
            height: 500px;
            border: 2px solid red;
            background: url(../images/01.jpg) no-repeat;
            /* background-size: 500px 200px; */
            /* cover要完全覆盖div盒子，可能有部分背景图片显示不全 */
            background-size: cover;
            /* contain高度和宽度等比例拉伸 当宽度或者高度铺面div盒子就不再进行拉伸了 可能有部分空白区域*/
        }
    </style>
</head>
<body>
    <div></div>
</body>
</html>

css初始化normalize.css

npm install normalize.css

盒子模型box-sizing
在这里插入图片描述

<style>
        div:nth-child(1){
            /* 有这句话padding和border不会撑大盒子了，让盒子变成css3盒子模型 */
            box-sizing: border-box;
            width: 200px;
            height: 200px;
            background-color: purple;
            padding: 10px;
            border: 10px solid blue;
        }
    </style>

特殊样式

<style>
       /* 去除高亮 */
       a{
        -webkit-tap-highlight-color:transparent;
       }
       /* 去除外观效果 */
       input{
        -webkit-appearance:nane;
       }

       /* 禁用长按页面时弹出菜单 */
       /* img,a{-webkit-touch-callout:none;} */
    </style>
</head>
<body>
    <a href="#">黑马</a>
    <input type="button" value="按钮">
</body>

流式布局

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>流式布局</title>
    <style>
        *{
            margin: 0;
            padding: 0;
        }
        section{
            width: 100%;
            max-width: 980px;
            min-width: 320px;
        }
        section div{
            float: left;
            width: 50%;
            height: 400px;
        }
        section div:nth-child(1){
            background-color: pink;
        }
        section div:nth-child(2){
            background-color: purple;
        }
       
    </style>
</head>
<body>
    <section>
        <div></div>
        <div></div>
    </section>
</body>
</html>

二级标题

弹性布局

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width,initial-scale=1.0,user-scalable=no,
    maximum-scale=1.0,minimun-scale=1.0">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title></title>
    <style>
       div{
        display: flex;
        width: 80%;
        height: 300px;
        background-color: pink;
        justify-content: space-around;
       }
       div span{
        width: 150px;
        height: 100px;
        background-color: purple;
        margin-left: 5px;
        flex:1;
       }
       
    </style>
</head>
<body>
    <div>
        <span>1</span>
        <span>2</span>
        <span>3</span>
    </div>

</body>
</html>

父项属性
在这里插入图片描述
主轴
在这里插入图片描述
在这里插入图片描述
在这里插入图片描述
在这里插入图片描述
在这里插入图片描述
简写
在这里插入图片描述

三级标题

子项属性
flex属性定义子项目分配剩余空间，用flex来表示占多少份数

flex:number;

align-self控制子项自己在侧轴上的排列方式

span:nth-child(2){
	align-self:flex-end;
}

order属性定义项目的排列顺序，越小越靠前
默认是0，取-1比0小所以在前面

四级标题

携程网首页案例
线性渐变
在这里插入图片描述
在这里插入图片描述
效果图
在这里插入图片描述
HTML

<!DOCTYPE html>
<html lang="en">
 
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <link rel="stylesheet" href="../css/normalize.css">
    <link rel="stylesheet" href="../css/index.css">
    <title>携程在手，说走就走</title>
</head>
 
<body>
    <!-- 顶部搜索 -->
    <div class="search-index">
        <div class="search">搜索:目的地/酒店/景点/航班号</div>
        <a href="#" class="user">我 的</a>
    </div>
    <!-- 焦点图模块 -->
    <div class="focus">
        <img src="../upload/focus.jpg" alt="">
    </div>
    <!-- 局部导航栏 -->
    <ul class="local-nav"><li>
        <a href="#" title="景点玩乐">
            <span class="local-nav-icon-icon1"></span>
            <span>景点玩乐</span>
        </a>
    </li>
    <li>
        <a href="#" title="景点玩乐">
            <span class="local-nav-icon-icon2"></span>
            <span>景点玩乐</span>
        </a>
    </li>
    <li>
        <a href="#" title="景点玩乐">
            <span class="local-nav-icon-icon3"></span>
            <span>景点玩乐</span>
        </a>
    </li>
    <li>
        <a href="#" title="景点玩乐">
            <span class="local-nav-iconicon4"></span>
            <span>景点玩乐</span>
        </a>
    </li>
    <li>
        <a href="#" title="景点玩乐">
            <span class="local-nav-icon-icon5"></span>
            <span>景点·玩乐</span>
        </a>
    </li>
    </ul>

    <!-- 主导航栏 -->
    <nav>
        <div class="nav-common">
            <div class="nav-items">
                <a href="#">海外酒店</a>
            </div>
            <div class="nav-items">
                <a href="#">海外酒店</a>
                <a href="#">特价酒店</a>
            </div>
            <div class="nav-items">
                <a href="#">海外酒店</a>
                <a href="#">特价酒店</a>
            </div>
        </div>
        <div class="nav-common">
            <div class="nav-items">
                <a href="#">海外酒店</a>
            </div>
            <div class="nav-items">
                <a href="#">海外酒店</a>
                <a href="#">特价酒店</a>
            </div>
            <div class="nav-items">
                <a href="#">海外酒店</a>
                <a href="#">特价酒店</a>
            </div>
        </div>
        <div class="nav-common">
            <div class="nav-items">
                <a href="#">海外酒店</a>
            </div>
            <div class="nav-items">
                <a href="#">海外酒店</a>
                <a href="#">特价酒店</a>
            </div>
            <div class="nav-items">
                <a href="#">海外酒店</a>
                <a href="#">特价酒店</a>
            </div>
        </div>
    </nav>

    <!-- 侧导航栏 -->
    <ul class="subnav-entry">
        <li>
            <a href="#">
                <span class="subnav-entry-icon"></span>
                <span>电话费</span>
            </a>
        </li>
        <li>
            <a href="#">
                <span class="subnav-entry-icon"></span>
                <span>电话费</span>
            </a>
        </li>
        <li>
            <a href="#">
                <span class="subnav-entry-icon"></span>
                <span>电话费</span>
            </a>
        </li>
        <li>
            <a href="#">
                <span class="subnav-entry-icon"></span>
                <span>电话费</span>
            </a>
        </li>
        <li>
            <a href="#">
                <span class="subnav-entry-icon"></span>
                <span>电话费</span>
            </a>
        </li>
        <li>
            <a href="#">
                <span class="subnav-entry-icon"></span>
                <span>电话费</span>
            </a>
        </li>
        <li>
            <a href="#">
                <span class="subnav-entry-icon"></span>
                <span>电话费</span>
            </a>
        </li>
        <li>
            <a href="#">
                <span class="subnav-entry-icon"></span>
                <span>电话费</span>
            </a>
        </li>
        <li>
            <a href="#">
                <span class="subnav-entry-icon"></span>
                <span>电话费</span>
            </a>
        </li>
        <li>
            <a href="#">
                <span class="subnav-entry-icon"></span>
                <span>电话费</span>
            </a>
        </li>
    </ul>


    <!-- 销售模块 -->
    <div class="sales-box">
        <div class="sales-hd">
            <h2>热门活动</h2>
            <a href="#" class="more">获取更多福利</a>
        </div>
        <div class="sales-bd">
            <div class="row">
                <a href="#">
                    <img src="../upload/pic1.jpg" alt="">
                </a>
                <a href="#">
                    <img src="../upload/pic2.jpg" alt="">
                </a>
            </div>
            <div class="row">
                <a href="#">
                    <img src="../upload/pic3.jpg" alt="">
                </a>
                <a href="#">
                    <img src="../upload/pic4.jpg" alt="">
                </a>
            </div> <div class="row">
                <a href="#">
                    <img src="../upload/pic5.jpg" alt="">
                </a>
                <a href="#">
                    <img src="../upload/pic6.jpg" alt="">
                </a>
            </div>
        </div>
    </div>
</body>
</html>

CSS

body {
    max-width: 540px;
    min-width: 320px;
    margin: 0 auto;
    font: normal 14px/1.5 Tahoma, "Lucida Grande", Verdana, "Microsoft Yahei", STXihei, hei;
    color: #000;
    background: #f2f2f2;
    overflow-x: hidden;
    -webkit-tap-highlight-color: transparent;
}
 
ul {
    list-style: none;
    margin: 0;
    padding: 0;
}
 
a {
    text-decoration: none;
   color: #222;
}
 
div {
    box-sizing: border-box;
}
 
 
/* 搜索模块 */
 
.search-index {
    display: flex;
    /* 固定定位跟父级没有关系 它以屏幕为准 */
    position: fixed;
    top: 0;
    left: 50%;
    /* 固定的盒子应该有宽度 */
    -webkit-transform: translateX(-50%)
																				

						

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