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CSS development tips

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Release： 2017-11-27 10:24:55

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A lot of CSS skills have been posted on the website, so today I will summarize the problems that I usually encounter at work, and talk about solutions using CSS. What is a multi-column equal-height layout?

Click to add text on one side, and the background on the other side will also be added.

html code:

<div id="container">
    <div class="left">haorooms多列等高布局左</div> 
    <div class="right" id="rights">多列等高布局,使用正负 margin 与 padding 相冲的方式实现。</div></div>

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Method 1: Use positive and negative margins to conflict with padding

   #container{
    width:400px;
    margin:0 auto;
    background:#eee;
    overflow:hidden;}.left,.right{
    width:200px;
    float:left;
    font-size: 16px;
    line-height:24px;
    color:#333;
    padding-bottom:5000px;
    margin-bottom:-5000px;}.left{
    background-color: deeppink;}.right{
    background-color:yellowgreen;}

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Give a large enough padding and negative margin

2. Use display:flex to achieve

This method is very simple. We often use it on the mobile terminal. Just set the container to display:flex and the child elements to flex:1.

3. Implementation of display:table-cell

Similar to the above method, the container is set to display:table; and the sub-element is set to display:table-cell;.

4. The implementation of setting the background color of the parent container is as follows:

#container{
    width:400px;
    margin:0 auto;
    background-color: deeppink;
    overflow:hidden;}.left,.right{
    width:200px;
    float:left;
    font-size: 16px;
    line-height:24px;
    color:#333;}.right{
    background-color:yellowgreen;}

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5. Multiple background colors of the parent container - linear gradient

#container{
    width:400px;
    margin:0 auto;
    background-image:
        linear-gradient(90deg, yellowgreen 50%, deeppink 0);
    overflow:hidden;}.left,.right{
    width:200px;
    float:left;
    font-size: 16px;
    line-height:24px;
    color:#333;}

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6. border Implement

   #container{
     border-left:200px solid yellowgreen;
     background-color:deeppink;
     width:200px;
     font-size: 16px;
     line-height:24px;
     color:#333;
    }
    .left{
        width:200px;
        margin-left:-200px;
        float:left;
    }

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Multi-column uniform layout

Method 1: display:flex

This method is also mentioned above. It is relatively simple to implement and is suitable for mobile layout.

Method 2: Use pseudo-elements and text-align:justify

html code is as follows:

<div class="container">
    <div class="justify">
        <i>1</i>
        <i>2</i>
        <i>3</i>
        <i>4</i>
        <i>5</i>
    </div></div>

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css code is as follows:

.justify{  text-align: justify;  text-align-last: justify; // 新增这一行}.justify i{  width:24px;  line-height:24px;  display:inline-block;  text-align:center;}
text-align-last兼容性不是很好，可以使用::after，
.justify{  text-align: justify;}.justify i{  width:24px;  line-height:24px;  display:inline-block;  text-align:center;  border-radius:50%;}.justify:after {  content: "";  display: inline-block;  position: relative;  width: 100%;}

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List layout boundary line Question

Method 1: Negative margin

Idea:

Set width on the outer layer, set overflow to hidden, set negative margin on the inner layer, margin-left:- 1px; you can hide the left margin

html code is as follows:

<div class="ul-container">
    <ul>
        <li>haorooms</li>
        <li>测试</li>
        <li>hao测试</li>
        <li>右侧</li>
        <li>边界线</li>
        <li>消失</li>
        <li>测试</li>
    </ul></div>

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css code:

ul{
    width: 300px;
    margin-left:-1px;}li{
    float:left;
    width:99px;
    line-height:30px;
    text-align:center;
    border-left:1px solid #999;
    font-size:18px;
    margin-bottom:10px;}.ul-container{
    width: 300px; 
    margin: 50px auto;
    overflow:hidden;
    background: #eee;
    padding:10px 0;}

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Method 2: Use pseudo

class selector

// Use the pseudo-class selector to select the 3nth element and remove the border li:nth-child(3n){

border-right:none;}

At work There are so many common questions. For more exciting information, please pay attention to other related articles on the php Chinese website!