• CSS浮动

    文章目录

    浮动

    1、应用场景

    1. 文字环绕

    2. 横向排列

    2、浮动基本特变

    修改float属性：
    -left：左浮动，元素靠上靠左
    -right:右浮动元素靠上靠右
    默认值为none

    1. 当一个元素浮动后，元素必定为块盒（更改dispaly属性为block）。
    2. 浮动元素的包含块和常规流一样，为父元素的内容盒。

    3、盒子尺寸

    1. 宽度为auto时，适应内容宽度
    2. 高度为auto时，与常规流一样，适应内容高度
    3. margin为auto时，为0
    4. 边框、内边距、百分比设置与常规流一样

    4、盒子排列

    1. 左浮动的盒子靠上靠左排列
    2. 右浮动的盒子靠上靠右排列
    3. 浮动盒子在包含块中排列时，会避开常规流块盒
    4. 常规流块盒在排列时，无视浮动盒子
    5. 行盒在排列时，会避开浮动盒子

    如果文字没有在行盒中，浏览器会自动生成一个行盒包裹文字，该行盒叫做匿名行盒

    "./hashiqi.jpg" alt="" style="width:200px;float:left;margin-right:19px;margin-botton:33px;">

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    1. 外边距合并不会发生

    5、高度坍塌

    高度坍塌根源：常规流盒子的自动高度，在计算时，不会考虑浮动盒子
    解决方法：清除浮动，涉及css属性：clear
    -默认值：none
    -left：清除左浮动，该元素必须出现在前面所有左浮动盒子的下方
    -right：清除右浮动，该元素必须出现在前面所有右浮动盒子的下方
    -both：清除左右浮动，该元素必须出现在前面所有浮动盒子的下方

    .clearfix{
    clear:both;
}

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    浮动练习

    1、movie.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>正在热映--猫眼电影title>
    <link rel="stylesheet" href="css/reset.css">
    <link rel="stylesheet" href="css/movie.css">
    <link rel="stylesheet" href="css/common.css">

head>
<body>
    <div class="main">
        
        <nav class="nav">
        <nav>
        <a href="">正在上映a>
        <a href="">即将上映a>
        <a href=""  class="select">经典影片a>
    nav>
nav>
<div class="container">
    <div class="choose-area">
        <div class="choose-item  clearfix">
            <div class="left">类型：div>
            <div class="right">
             
                <ul>
                    <li class="select"><a href="" >Lorem.a>li>
                    <li><a href="">Minima!a>li>
                    <li><a href="">Nesciunt?a>li>
                    <li><a href="">A.a>li>
                    <li><a href="">Dolore?a>li>
                    <li><a href="">Aliquam.a>li>
                    <li><a href="">Omnis!a>li>
                    <li><a href="">Nisi!a>li>
                    <li><a href="">Facere.a>li>
                    <li><a href="">Quibusdam.a>li>
                    <li><a href="">Repudiandae?a>li>
                    <li><a href="">A!a>li>
                    <li><a href="">Alias!a>li>
                    <li><a href="">Illo.a>li>
                    <li><a href="">Ab!a>li>
                    <li><a href="">Sunt.a>li>
                    <li><a href="">Dolorem.a>li>
                    <li><a href="">Recusandae?a>li>
                    <li><a href="">Voluptatem!a>li>
                    <li><a href="">Hic?a>li>
                ul>
            div>
        div>
        <div class="choose-item clearfix">
            <div class="left">地区：div>
            <div class="right">           
                <ul>
                    <li><a href="">Lorem.a>li>
                    <li><a href="">Minima!a>li>
                    <li><a href="">Nesciunt?a>li>
                    <li><a href="">A.a>li>
                    <li><a href="">Dolore?a>li>
                    <li><a href="">Aliquam.a>li>
                    <li><a href="">Omnis!a>li>
                    <li><a href="">Nisi!a>li>
                    <li><a href="">Facere.a>li>
                    <li><a href="">Quibusdam.a>li>
                    <li><a href="">Repudiandae?a>li>
                    <li><a href="">A!a>li>
                    <li><a href="">Alias!a>li>
                    <li><a href="">Illo.a>li>
                    <li><a href="">Ab!a>li>
                    <li><a href="">Sunt.a>li>
                    <li><a href="">Dolorem.a>li>
                    <li><a href="">Recusandae?a>li>
                    <li><a href="">Voluptatem!a>li>
                    <li><a href="">Hic?a>li>
                ul>
        div>
        <div class="choose-item clearfix no-line"> 
            <div class="left">年代：div>
            <div class="right"> 
                       
                       <ul>
                        <li><a href="">Lorem.a>li>
                        <li><a href="">Minima!a>li>
                        <li><a href="">Nesciunt?a>li>
                        <li><a href="">A.a>li>
                        <li><a href="">Dolore?a>li>
                        <li><a href="">Aliquam.a>li>
                        <li><a href="">Omnis!a>li>
                        <li><a href="">Nisi!a>li>
                        <li><a href="">Facere.a>li>
                        <li><a href="">Quibusdam.a>li>
                        <li><a href="">Repudiandae?a>li>
                        <li><a href="">A!a>li>
                        <li><a href="">Alias!a>li>
                        <li><a href="">Illo.a>li>
                        <li><a href="">Ab!a>li>
                        <li><a href="">Sunt.a>li>
                        <li><a href="">Dolorem.a>li>
                        <li><a href="">Recusandae?a>li>
                        <li><a href="">Voluptatem!a>li>
                        <li><a href="">Hic?a>li>
                    ul>
    div>
 div>
div>

div>
<div class="movies">
    <div class="movie-item">
        <div class="poster"><a href=""><img src="./img/test1.jpg" alt="">a>div>
        <div class="name"><a href="">断桥a>div>
        <div class="score">9.4div>
    div>
    <div class="movie-item">
        <div class="poster"><a href=""><img src="./img/test1.jpg" alt="">a>div>
        <div class="name"><a href="">电影名字123a>div>
        <div class="score">9.4div>
    div>
    <div class="movie-item">
        <div class="poster"><a href=""><img src="./img/test1.jpg" alt="">a>div>
        <div class="name"><a href="">电影名字123a>div>
        <div class="score">9.4div>
    div>
    <div class="movie-item">
        <div class="poster"><a href=""><img src="./img/test1.jpg" alt="">a>div>
        <div class="name"><a href="">电影名字123a>div>
        <div class="score">9.4div>
    div>
    <div class="movie-item">
        <div class="poster"><a href=""><img src="./img/test1.jpg" alt="">a>div>
        <div class="name"><a href="">电影名字123a>div>
        <div class="score">9.4div>
    div>
    <div class="movie-item">
        <div class="poster"><a href=""><img src="./img/test1.jpg" alt="">a>div>
        <div class="name"><a href="">电影名字123a>div>
        <div class="score">9.4div>
    div>
    <div class="movie-item">
        <div class="poster"><a href=""><img src="./img/test1.jpg" alt="">a>div>
        <div class="name"><a href="">电影名字123a>div>
        <div class="score">9.4div>
    div>
    <div class="movie-item">
        <div class="poster"><a href=""><img src="./img/test1.jpg" alt="">a>div>
        <div class="name"><a href="">电影名字123a>div>
        <div class="score">9.4div>
    div>
    <div class="movie-item">
        <div class="poster"><a href=""><img src="./img/test1.jpg" alt="">a>div>
        <div class="name"><a href="">电影名字123a>div>
        <div class="score">9.4div>
    div>
    <div class="movie-item">
        <div class="poster"><a href=""><img src="./img/test1.jpg" alt="">a>div>
        <div class="name"><a href="">电影名字123a>div>
        <div class="score">9.4div>
    div>
    <div class="movie-item">
        <div class="poster"><a href=""><img src="./img/test1.jpg" alt="">a>div>
        <div class="name"><a href="">电影名字123a>div>
        <div class="score">9.4div>
    div>
    <div class="movie-item">
        <div class="poster"><a href=""><img src="./img/test1.jpg" alt="">a>div>
        <div class="name"><a href="">电影名字123a>div>
        <div class="score">9.4div>
    div>
    <div class="movie-item">
        <div class="poster"><a href=""><img src="./img/test1.jpg" alt="">a>div>
        <div class="name"><a href="">电影名字123a>div>
        <div class="score">9.4div>
    div>
    <div class="movie-item">
        <div class="poster"><a href=""><img src="./img/test1.jpg" alt="">a>div>
        <div class="name"><a href="">电影名字123a>div>
        <div class="score">9.4div>
    div>
    <div class="movie-item">
        <div class="poster"><a href=""><img src="./img/test1.jpg" alt="">a>div>
        <div class="name"><a href="">电影名字123a>div>
        <div class="score">9.4div>
    div>
    <div class="movie-item">
        <div class="poster"><a href=""><img src="./img/test1.jpg" alt="">a>div>
        <div class="name"><a href="">电影名字123a>div>
        <div class="score">9.4div>
    div>
    <div class="movie-item">
        <div class="poster"><a href=""><img src="./img/test1.jpg" alt="">a>div>
        <div class="name"><a href="">电影名字123a>div>
        <div class="score">9.4div>
    div>
    <div class="movie-item">
        <div class="poster"><a href=""><img src="./img/test1.jpg" alt="">a>div>
        <div class="name"><a href="">电影名字123a>div>
        <div class="score">9.4div>
    div>
    <div class="movie-item">
        <div class="poster"><a href=""><img src="./img/test1.jpg" alt="">a>div>
        <div class="name"><a href="">电影名字123a>div>
        <div class="score">9.4div>
    div>
    <div class="movie-item">
        <div class="poster"><a href=""><img src="./img/test1.jpg" alt="">a>div>
        <div class="name"><a href="">电影名字123a>div>
        <div class="score">9.4div>
    div>
    <div class="movie-item">
        <div class="poster"><a href=""><img src="./img/test1.jpg" alt="">a>div>
        <div class="name"><a href="">电影名字123a>div>
        <div class="score">9.4div>
    div>
    <div class="movie-item">
        <div class="poster"><a href=""><img src="./img/test1.jpg" alt="">a>div>
        <div class="name"><a href="">电影名字123a>div>
        <div class="score">9.4div>
    div>
    <div class="movie-item">
        <div class="poster"><a href=""><img src="./img/test1.jpg" alt="">a>div>
        <div class="name"><a href="">电影名字123a>div>
        <div class="score">9.4div>
    div>
    <div class="movie-item">
        <div class="poster"><a href=""><img src="./img/test1.jpg" alt="">a>div>
        <div class="name"><a href="">电影名字123a>div>
        <div class="score">9.4div>
    div>
    <div class="movie-item">
        <div class="poster"><a href=""><img src="./img/test1.jpg" alt="">a>div>
        <div class="name"><a href="">电影名字123a>div>
        <div class="score">9.4div>
    div>
    <div class="movie-item">
        <div class="poster"><a href=""><img src="./img/test1.jpg" alt="">a>div>
        <div class="name"><a href="">电影名字123a>div>
        <div class="score">9.4div>
    div>
    <div class="movie-item">
        <div class="poster"><a href=""><img src="./img/test1.jpg" alt="">a>div>
        <div class="name"><a href="">电影名字123a>div>
        <div class="score">9.4div>
    div>
    <div class="movie-item">
        <div class="poster"><a href=""><img src="./img/test1.jpg" alt="">a>div>
        <div class="name"><a href="">电影名字123a>div>
        <div class="score">9.4div>
    div>
    <div class="movie-item">
        <div class="poster"><a href=""><img src="./img/test1.jpg" alt="">a>div>
        <div class="name"><a href="">电影名字123a>div>
        <div class="score">9.4div>
    div>

<div class="movie-item">
    
    <div class="poster">
        <a href="">
            <img src="./img/test1.jpg" alt="">
        a>
    div>
    <div class="name">
        <a href="">
            断桥
        a>
    div>
    <div  class="score">
        9.4
    div>
div>
div>
<div class="pager">
    <a href="">
        上一页
    a>
    <a href="" class="select">1a><a href="">2a><a href="">3a><a href="">4a><a href="">5a>
    <a href="">
        下一页
    a>
div>
div>

div>
body>
html>

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    2、movie.css

    body{
    color:#333;
}
.clearfix::after{
    content:"";
    display:block;
    clear:both;
}
.main{
    line-height: 1.5;
}
.main .nav{
    height:60px;
    background-color: #47464a;
    color:#999;
    text-align: center;
    line-height: 60px;
}
.mian .nav a{
    margin:0 38px;
}
.main .nav a:hover{
    color:#fff;
}
.main .nav a.select{
    color:#ef4238;
}
.main .container{
    width:1120px;
    margin:0 auto;
}
.main .container .choose-area{
    border:1px solid #e5e5e5;
    margin:40px 0;
    font-size:14px;
    line-height:30px;
    padding:0 30px;
}
.main .container .choose-area .choose-item{
    margin:1em 0;
    border-bottom:1px dotted #e5e5e5 ;
}
.main .container .choose-area .choose-item.no-line{
    border:none;
}
.main .container .choose-area .choose-item .left{
   float:left;
    /* width:60px;
    text-align: right; */
    color:#999;
}
.main .container .choose-area .choose-item .right{
  float:left;
  width:1000px;
}
.main .container .choose-area .choose-item .right li{
    float:left;
    margin:0 9px;
    padding:0 6px;
}
.main .container .choose-area .choose-item .right li:hover{
    color:#ef4238;
}
.main .container .choose-area .choose-item .right li.select{
    background: #ef4238;
    color:#fff;
    /* css圆角边框 */
    border-radius: 15px;
}
.main .container .movies .movie-item{
    float:left;
    width:160px;
  
    margin:10px 28px 10px 0;
}
/* 伪类选择器 */
.main .container .movies .movie-item:nth-child(6n){
    margin-right:0;
}
.main .container .movies .movie-item .poster img{
    width:160px;
    height:220px;
}
.main .container .movies .movie-item .name{
    white-space:nowrap;
    overflow:hidden;
    text-overflow: ellipsis;
    padding:0 2px;
    text-align: center;
}
.main .container .movies .movie-item .score{
    color:#ffb400;
    text-align: center;
    line-height:2.5;
    font-style:italic;

}
.main .container .movies .movie-item .score::first-letter{
    font-size: 1.5em;
}

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    3、common.css

    /* 多页面的公共样式 */
.pager{
    margin:2em 0;
    text-align: center;
    
}
.pager a{
    border:1px solid #d8d8d8;
    padding:5px 10px;
    margin:0 2px;
}
.pager a:hover{
    border-color:#ef4238;

}
.pager a.select{
    background:#ef4238;
    color:#fff;
    border:none;
}


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    4、reset.css

    /*通用的  */
h1{
    font-size:1em;
    font-weight:normal;
}

ol,
ul{
    list-style:none;
}
blockquote,
q{
    quotes:none;
}
blockquote:before,
blockquote:after,
q::before,
q::after{
    content:'';
    content:none;
}

table{
    border-collapse: collapse;
    border-spacing: 0;

}
a{
    text-decoration:none ;
    color:inherit;
}

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    5、效果

    在这里插入图片描述
    http://127.0.0.1:5500/CSS/12.%E6%B5%AE%E5%8A%A8/movie.html

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  • 原文地址：https://blog.csdn.net/qq_62217723/article/details/126410897