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连续英文文字断行

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2

动画

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

word-break: normal|break-all|keep-all;

怎么使导航悬停2个字变成4个字的同时下边框出现在底部

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class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

<!DOCTYPE html>
<html>

<head>
    <title>Bootstrap 实例</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.1.0/css/bootstrap.min.css">
    <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script>
    <script src="https://cdn.staticfile.org/popper.js/1.12.5/umd/popper.min.js"></script>
    <script src="https://cdn.staticfile.org/twitter-bootstrap/4.1.0/js/bootstrap.min.js"></script>
    <link rel="stylesheet" type="text/css" href="task8-2.css">
</head>

<body>
    <header class=" container none">
        <div class="d-flex justify-content-between align-items-center padding-lf-1rem">
            <span class="color-main font-size-14">
                客服热线：010-594-78634
            </span>
            <div>
                <i class="samll-icon nav-icon-1"></i>
                <i class="samll-icon nav-icon-2"></i>
                <i class="samll-icon nav-icon-3"></i>
            </div>
        </div>
    </header>
    <nav class="bg-main" >
        <div class="container">
            <div class="navbar navbar-expand-lg nav-height navbar-dark" >
                <a class="navbar-brand" href="#"><img src="img/home-logo.png" class="nav-logo"></a>
                <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav"
                    aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
                    <span class="navbar-toggler-icon"></span>
                </button>
                <div class="collapse navbar-collapse" id="navbarNav">
                    <ul class="navbar-nav ml-auto">
                        <li class="nav-item active" style="display: flex;align-items: center;">
                            <p class="wwwww"></p>
                            <a class="nav-link font-size-18 nav-link-width" href="#">首页机缘</a>
                            
                        </li>
                        <li class="nav-item ">
                            <a class="nav-link font-size-18 nav-link-width" href="#">职业咨询</a>
                        </li>
                        <li class="nav-item ">
                            <a class="nav-link font-size-18 nav-link-width" href="#">合作企业</a>
                        </li>
                        <li class="nav-item ">
                            <a class="nav-link font-size-18 nav-link-width" href="#">关于修真</a>
                        </li>
                    </ul>
                </div>
            </div>
        </div>
    </nav>
</body>

</html>

.nav-link-width {
  width: 37px;
  height: 21px;
  line-height: 21px;
  overflow: hidden;
  padding: 0 !important;
  text-overflow: ellipsis;
  display: inline-block;
  margin-left: 2rem !important;
}
.nav-height {
  height: 100px;
}
.nav-item:hover .nav-link-width {
  width: 75px;
  margin-left: 2rem !important;

  border-bottom: 2px solid #fff;
}

table td宽度问题

1

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

                    <table>
                        <tr>
                            <td colspan="4" rowspan="2">
                                <div class="table-image1"></div>
                            </td>
                            <td colspan="6" class="border1">Web前端工程师</td>
                        </tr>
                        <tr>
                            <td colspan="6"  class="border1-1">Web前端开发工程师，主要职责是利用（X）HTML/CSS/JavaScript/flash等各种Web技术进行产品的开发。</td>
                        </tr>
                        <tr >
                            <td colspan="5" class="border2"> 门槛<div class="table-image2"></div></td>
                            <td colspan="5" class="border2"> 难易程度</td>
                        </tr>
                        <tr>
                            <td colspan="5"  class="border2"> 成长周期</td>
                            <td colspan="5"  class="border2"> 稀缺程度</td>
                        </tr>
                        <tr >
                            <td colspan="4" rowspan="3"   class="border3-1"> 薪资待遇</td>
                            <td colspan="6" class="border3-2"> 稀缺程度</td>
                        </tr>
                        <tr>
                            <td  colspan="6" class="border3-2"> 稀缺程度</td>
                        </tr>
                        <tr>
                            <td  colspan="6" class="border3-2"> 稀缺程度</td>
                        </tr>

                        <tr>
                            <td  colspan="10" class="border4"> 稀缺程度</td>
                        </tr>
                        <tr>
                            <td  colspan="10" class="border5"> 稀缺程度</td>
                        </tr>
                    </table>

bootstrap3.0和4.0栅格系统布局有什么区别

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1

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

<header>
        <div class="container">
            <div class="row align-items-center headerHeight">
                <div class="col-md-6 ">
                    <div class="customService">客服热线：010-594-78634</div>
                </div>
                <div class="col-md-6 text-right icons">
                    <div class="wechat"></div>
                    <div class="qq"></div>
                    <div class="sina"></div>
                </div>
            </div>
        </div>
        <div class="bgc">
            <div class="container bgc">
                <div class="row align-items-center bgc">
                    <div class="col-4 col-sm-4">
                        <div class="tree">技能树</div>
                        <div class="url">www.jnshu.com</div>
                    </div>
        
                    <div class="col-8 col-sm-8">
                        <ul class="nav navRight text-center justify-content-end">
                            <a href="">
                                <li class="nav-item">
                                    首页
                                    <div class="white">
                                </li>
                            </a>
                            <a href="">
                                <li class="nav-item">
                                    职业
                                    <div class="white">
                                </li>
                            </a>
                            <a href="">
                                <li class="nav-item">
                                    推荐
                                    <div class="white">
                                </li>
                            </a>
                            <a href="">
                                <li class="nav-item">
                                    关于
                                    <div class="white">
                                </li>
                            </a>

                        </ul>
                    </div>
                </div>


            </div>
        </div>

    </header>

父元素使用伪类hover时出现了子元素出现同样效果的问题

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1

hover

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

           <div class="col-xs-12  col-sm-12 col-md-5 main4-box">
                <div class="main4-icobox">
                    <div class="main4-ico1 main4-clearhover"></div>
                </div>
            </div>
.main4-box :hover {
    box-shadow: 0 0 1px #9E9E9E;
}

bootstrap中的col-xs-*,col-sm-*,col-的意义

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1

响应式媒体查询

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

<div class="container">
    <div class="row">
        <div class="col-md-4">col-md-4</div>
        <div class="col-md-4">col-md-4</div>
        <div class="col-md-4">col-md-4</div>
    </div>
    <div class="row">
        <div class="col-md-4">col-md-4</div>
        <div class="col-md-8">col-md-8</div>

    </div>
    <div class="row">
        <div class="col-md-3">col-md-3</div>
        <div class="col-md-6">col-md-6</div>
        <div class="col-md-3">col-md-3</div>
  
    </div>

bootstrap4.0框架的汉堡菜单如何引用完成任务8的导航栏

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1

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

<nav class="navbar navbar-expand-lg navbar-light bg-light">
  <a class="navbar-brand" href="#">Navbar</a>
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
    <span class="navbar-toggler-icon"></span>
  </button>
  <div class="collapse navbar-collapse" id="navbarNav">
    <ul class="navbar-nav">
      <li class="nav-item active">
        <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">Features</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#">Pricing</a>
      </li>
      <li class="nav-item">
        <a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
      </li>
    </ul>
  </div>
</nav>

bootstrap框架的结构需要怎么放才好。

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1

媒体查询

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

 <div class="container">
      <div class="youxiu">优秀学员展示</div>
      <div class="row">
        <div class="col-lg-3 col-md-6  col-12  ">
          <div class="yxbox">
            <img src="../image/学员展示/1.png" class="xyimg">
            <span>发型顾问：汤小尼</span>
            <p>百度技术总监：互联网基础
              服务领域，从事虚拟主机、
              云服务器、域名。曾任新网
              高级技术经理，负责技术研
              发、团队管理与建设。</p>
          </div>
        </div>
        <div class="col-lg-3 col-md-6  col-12  ">
          <div class="yxbox1 ">
            <img src="../image/学员展示/1.png" class="xyimg">
            <span>发型顾问：汤小尼</span>
            <p>百度技术总监：互联网基础
              服务领域，从事虚拟主机、
              云服务器、域名。曾任新网
              高级技术经理，负责技术研
              发、团队管理与建设。</p>
          </div>
        </div>

用了bootstrap栅格为什么在1080px以上就会向左边靠拢？

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1

响应式媒体查询

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

<div class="row">
                <div class="excellent">优秀学员展示</div>
                <div class="col-xs-12 col-sm-12 col-md-6 col-lg-3 boxs-three">
                    <div class="picture-box">
                        <div class="pictures-one"></div>
                        <p class="picture-text">技术顾问：罗大佑</p>
                        <p class="picture-texts">
                            百度技术总监：互联网基础服务领域，从事虚拟主机、云服务器、域名。曾任新网高级技术经理，负责技术研发、团队管理和建设。
                        </p>
                    </div>

收缩分辨率的时候改变导航栏

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1

响应式

class="cursor-pointer"> 详细描述

class="cursor-pointer"> 截图

class="cursor-pointer"> 代码

 <header>
        <div class="coze ">
            <div class="phone">客服热线：010-594-78634</div>
            <div class="telephony">
                <div class="chat"></div>
                <div class="chew"></div>
                <div class="the"></div>
            </div>
        </div>
        <div class="tag">
            <div class="jinengshu"> 技能树</div>
            <div class="guanyu">
                <a href="#" class="zhiye">首页</a>
                <a href="#" class="zhiye">职业</a>
                <a href="#" class="zhiye">推存</a>
                <a href="#" class="zhiye">关于</a>
            </div>
        </div>
        <div class="mark"></div>
    </header>
    <main>
        <div class="tally">
            <span>首页></span>
            <span class="business">合作企业</span>