H5 , Css基础练习

h5,css基础练习

1.内边距练习padding


<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">
    <title>H5title>
    <style>
        div{
      
            width:200px;
            height: 200px;
            border: 1px solid red;        #边框线1像素红色
            /* padding:10px  20px 30px 20px; */
            /* 顺序顺时针上右下左 */
            /* padding-top:10px;上边距 */
            /* 左内边距 */
            padding-top: 5px;           #内边距上
            padding-left: 20px;         #左内边距
        }
    style>    
head>
<body>
    <div>这是div中的文字div>
body>
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">
    <title>Documenttitle>
    <style>
        /* div{
            width: 50px;
            height: 60px;
            border: 1px solid rgb(219, 209, 209);
            text-align: center;#    字体居中
            /* padding-bottom: ; */
            /* font-size: 16px; */
            /* padding会作用在元素的大小计算中,padding增大整个元素也会增大,无法实现居中 */
            /* padding-top: 22px; */
            /* 行高等于当前元素高度时 字体在当前元素垂直居中 */
            /* line-height: 60px; */
            
        /* } */
        div{
      
            width: 32px;
            border: 1px solid red;
            font-size: 16px;
            /* 简化成上右下左 */
            padding: 22px 9px 22px 9px;    #内边距嫖
            /* 再简化 */
            padding: 22px 9px;
        }
    style>
head>
<body>
    <div>首页div>
body>
html>

2.外边距margin


<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">
    <title>Documenttitle>
    <style>
        div{
      
            width: 200px;
            height: 200px;
            /* border:1px solid red; */
            background-color: pink;
            /* 解决外边距溢出是为父边距添加一个盖子,让子元素的外边距能找到作用的点 */
            /* 方法一为辅元素添加上透明框 */
            /* 父元素上边距可能会和溢出的子元素外边距合并无法组织溢出 */
            /* 方法二为父元素添加内边距 */
            /* margin: 10px 20px 30px 40px; */
            border-top:1px solid transparent;

        }
        #d1{
      
            margin-bottom: 10px;
        }
        #d2{
      
            margin-top:20px;
        }
    style>
head>
<body>
    <div id="d1">
        <p>这是pp>
    div>
    <div id="d2">div>
body>
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">
    <title>inline-margintitle>
    <style>
        span{
      
            border:1px solid red;
        }
        #s2{
      
            margin-left: 20px;
        }
        #s1{
      
            /* margin可以取负值 表示向相反方向移动 */
            margin-left: -10px;
            margin-right: 10px;
        }
        ul{
      
            /* 取消列表样式 */
            list-style: none
        }
    style>
head>
<body>
    <span id="s1">中午吃啥?span><span id="s2">随便span>
    <ul>
        <li>1li>
        <li>2li>
        <li>3li>
    ul>
body>
html>

3.盒子box


<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">
    <title>Documenttitle>
    <style>
        div{
      
            /* contnt-box计算方式 */
            /* width: 150px;
            height:150px;
            border: 5px solid red;
            background-color: orange;
            padding:10px;
            margin: 10px; */
            width: 180px;
            height: 180px;
            /* border-box 将内边距和边框一同计算在内容中 */
            /* 同时根据内边距和边框大小调整内容大小 */
            /* 计算方式width/height+margin */
            box-sizing: border-box;
            border: 5px solid red;
            padding: 10px;
            margin: 10px;
        }
    style>
head>
<body>
    <div>div>
body>
html>

4.拓展练习


<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">
    <title>Documenttitle>
    <style>
        #s1{
      
            color: #666;
            
        }
        div{
      
            width: 0px;
            height: 0px;
            border:8px solid transparent;
            border-top-color:#444;
            display: inline-block;
            margin-bottom: -6px;
        }
    style>
head>
<body>
    <span id="s1">
        上海
    span>
    <div id="s2">div>
body>
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">
    <title>Documenttitle>
    <style>
        div{
      
            width:180px;
            height: 62px;
            background-color: black;
            border-radius: 30px;
            color: rgb(238, 223, 11);
            font-size: 30px;
            text-align: center;
            line-height: 62px;
        }
        div:hover{
      
            background-color: red;
            color: aliceblue;
            cursor: pointer;
            transition: all 1s;
        }
    style>
head>
<body>
    <div>
            PLUS会员
    div>
body>
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">
    <title>Documenttitle>
    <style>
        
        .item{
      
            width:  50px;
            height: 25px;
            margin:0 10px;
            padding: 5px 10px;
            font-size: 8px;
             line-height: 40px;
        }
        .item:hover{
      
            border-radius: 5px;
            background-color: rgb(255, 0, 0);
            color: aliceblue;
            transition: all 0.5s;
            cursor: pointer;
        }
        div{
      
            width: 80%;
            height: 40px;
            border:  1px solid rgb(114, 109, 109);
           
        }
        #s1{
      
            color: rgb(73, 75, 61);
        }
    style>
head>
<body>
    <div>
        <span id="s1" class="item">难度:span>
        <span class="item">全部span>
        <span class="item">初级span>
        <span class="item">中级span>
        <span class="item">高级span>
    div>
body>
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">
    <title>练习4title>
    <style>
        .banner{
      
                width: 200px;
                height: 200px;
                border: 1px solid red;
                text-align: center;
                /* 水平居中上下不调整左右自动 */
                margin: 0 auto;
        }
        #d1{
      
            margin-left: -166px; 
            background-color: red;
            color: white;
        }    
        
        .d2{
      
            display: block;
            margin-left: -75px;
            font-size:20px;
            
        }
        #d3{
      
            display: block;
            margin-left:-37px;
            color: rgb(121, 117, 117);
        }
        #img1{
      
            margin-top:20px;
        }
    style>
head>
<body>
    
    <div class="banner">
        <span id="d1">低价span>
        <span class="d2"><b>母婴馆b>span>
        <span id="d3">秒杀低至一元span>
        <img src="/home/tarena/桌面/1906/html/day04/exer/imgs/img01-2-3.png" alt="图片加载失败" id="img1">
    div>   
body>
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">
    <title>练习5title>
    <style>
        #d{
      
            width: 187px;
            height: 242px;
            border: 1px solid rgb(185, 172, 172);
            margin: 0 auto;
            text-align: center;
            
            
        }
        #d1{
      
            font-size: 40 px;
            margin-left:-150px;
        }
        #ig1{
      
            margin-top: 20px;
        }
        #d2{
      
            margin-top: 20px;
        }
        #d3{
      
            margin-top: 20px;
            color: rgb(117, 106, 106);
        }
        #d:hover{
      
            width: 187px;
            height: 242px;
            border: 1px solid rgb(185, 172, 172);
            margin: 0 auto;
            margin-top: -5px;
            text-align: center;
            cursor: pointer;
            box-shadow: 10px 10px 15px 0;
            
        }
    style>
head>
<body>
    <div id="d">
        <div id="d1"><b>众筹b>div>
        <img src="/home/tarena/桌面/1906/html/day04/exer/imgs/img01.png" alt="图片加载失败" id="ig1">
        <div id="d2"><b>苹果I-Watch呼吸表带b>div>
        <div id="d3">一场手腕的呼吸div>
    div>
body>
html>

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