CSS - 如何在大 Li 的 UL LI 的第二列继续

Question

我有以下 CSS，效果很好。但是，我有大约 50 里。有没有办法自动添加列并每列显示 10 个？我试过 left: float;但看起来很讨厌。我尝试了 column-count: 3 和 column-gap: 10px 但对 li 没有影响(只是改变了 ul 的宽度)

如果有帮助，我在 jsFiddle 上有 html 和 css。 https://jsfiddle.net/zq54cb2b/

#cssmenu ul li {
  padding: 7px 7px;
  color: #000000;
  background-color: #cce5ff;
  border-bottom: 1px solid #f1f5f9;
}

Answer 1

使用 flexbox 怎么样？

#cssmenu ul {
  display: flex;
  flex-wrap: wrap;
}

#cssmenu ul li {
  flex: 1 0 25%;
}

<style>
	.ms-viewheadertr
	{
	  display: none;
	}
	.ms-WPHeader
	{
		background: #93BBE4!important;		
	}
	.ms-WPTitle
	{
		font-family: Verdana, Tahoma, sans-serif;	
		font-size: 14px!important;		
		color: #fffef9;
		font-weight: bolder!important;
	}
	
	.ms-WPTitle A:link, .ms-WPTitle A:visited
	 {
	 color:#fffef9;
	 text-decoration:none;
	 cursor:hand;
	 }
		
	#cssmenu {
	  padding: 0;
	  margin: 0;
	  border: 0;
	  position: relative;
	  z-index:1;
	  padding-bottom: 25px;
	  font-family: Verdana, Tahoma, sans-serif;
	}

	#cssmenu ul,
	#cssmenu ul li,
	#cssmenu ul ul,
	#cssmenu ul ul ul {
	  list-style: none;
	  margin: 0;
	  padding: 0;
	  border: 0;	  
	}

	#cssmenu ul {
	  position: relative;
	  z-index: 397;  
	  
	}

	#cssmenu ul li {
	  min-height: 1px;
	  line-height: 1em;
	  vertical-align: middle;	 

	}
  #cssmenu ul {
     display: flex;
     flex-wrap: wrap;
  }
  
  #cssmenu ul li {
  flex: 1 0 25%;
  }

	#cssmenu ul li:hover {
	  position: relative;
	  //z-index: 99;
	  cursor: default;	 
	}

	#cssmenu ul ul {
	  visibility: hidden;
	  position: absolute;
	  top: 100%;
	  left: 0;
	  /* z-index: 398; */
	  width: 100%;	  
	}

	#cssmenu ul ul ul {
	  top: 0px;
	  left: 99%;
	}

	#cssmenu ul li:hover > ul {
	  visibility: visible;
	  width:170px;
	}

	#cssmenu ul ul {
	  bottom: 0px;
	  left: 0;
	}

	/* Custom CSS Styles */

	#cssmenu ul {
	  width: 100px;	  
	}

	#cssmenu ul ul {
	  width: 167px;	  
	}

	#cssmenu ul li {
	  padding: 7px 7px;
	  color: #000000;
	  background-color: #cce5ff;
	  //background-color:#FFF;
	  //border: 1px solid red;
	  border-bottom: 1px solid #f1f5f9;
	}

	#cssmenu ul li:hover {
	  background:  #cce5ff;
	  color: #000;
	  box-shadow:1px 1px 10px 2px #888;
	}

	#cssmenu ul a:link,
	#cssmenu ul a:visited {
	  color: #000;
	  text-decoration: none;	  
	}

	#cssmenu ul a:hover {
	  color: #000;	  
	}

	#cssmenu ul a:active {
	  color: #ffa500;	  
	}
	
	#cssmenu ul li a:link,
	#cssmenu ul li a:visited{
	  /* color: #FFFFFF; 
	  outline: none!important; */
	}
	
	#cssmenu ul li a img{
	  /* color: #FFFFFF; 
	  outline: none!important; */
	}
	
</style>

<div id='cssmenu'>
  <ul>
    <table cellpadding="1" cellspacing="1" style="width: 100%;">
      <tbody>
        <tr>
          <td>
            <li><img alt="Countries" src="https://cdn.vectorstock.com/i/thumb-large/57/49/1285749.jpg" style="width: 112px; height: 117px;" /> Select Country				
              <ul>
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_Argentina.aspx'><span>Argentina</span></a></li>
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_USA .aspx'><span>USA </span></a></li>
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_USA .aspx'><span>All others </span></a></li>
				
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_Argentina.aspx'><span>Argentina</span></a></li>
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_Bahrain .aspx'><span>Bahrain </span></a></li>
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_Belleli.aspx'><span>Belleli</span></a></li>
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_Bolivia.aspx'><span>Bolivia</span></a></li>
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_Brazil.aspx'><span>Brazil</span></a></li>
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_Canada.aspx'><span>Canada</span></a></li>
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_Chile.aspx'><span>Chile</span></a></li>
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_China .aspx'><span>China </span></a></li>
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_Colombia.aspx'><span>Colombia</span></a></li>
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_Dubai .aspx'><span>Dubai </span></a></li>
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_Ecuador.aspx'><span>Ecuador</span></a></li>
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_Egypt.aspx'><span>Egypt</span></a></li>
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_Europe.aspx'><span>Europe</span></a></li>
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_Gabon .aspx'><span>Gabon </span></a></li>
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_Hamriyah.aspx'><span>Hamriyah</span></a></li>
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_Indonesia .aspx'><span>Indonesia </span></a></li>
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_Marine/Offshore travel.aspx'><span>Marine/Offshore travel</span></a></li>
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_Mexico.aspx'><span>Mexico</span></a></li>
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_Nigeria .aspx'><span>Nigeria </span></a></li>
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_Oman .aspx'><span>Oman </span></a></li>
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_Pakistan .aspx'><span>Pakistan </span></a></li>
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_Peru .aspx'><span>Peru </span></a></li>
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_Qatar.aspx'><span>Qatar</span></a></li>
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_Russia.aspx'><span>Russia</span></a></li>
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_Saudi Arabia.aspx'><span>Saudi Arabia</span></a></li>
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_Singapore .aspx'><span>Singapore </span></a></li>
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_Thailand .aspx'><span>Thailand </span></a></li>
				<li><a href='https://inside.nov.com/HR/Pages/Travel/Travel_USA .aspx'><span>USA </span></a></li>

              </ul>
            </li>
          </td>
          <td>
            <li>
              <img alt="UsefulLinks" src="https://cdn.vectorstock.com/i/thumb-large/67/94/9236794.jpg" style="width: 112px; height: 117px;" /> Useful Links
              <ul>
                <li><a href='https://inside.nov.com/crp/docs/ProjectManagement/PJM-FRM-0010.docx'><span>Travel Request Form</span></a></li>
                <li><a href='https://inside.nov.com/HyattExtra/Hyatt%20Extra%2069%20-%20International%20Travel%20and%20Security.pdf'><span>International Travel & Security</span></a></li>
                <li><a href='https://inside.nov.com/HR/Documents/Travel/PassportChecklist.pdf'><span>Passport Checklist</span></a></li>
                <li><a href='http://www.google.com'><span>P-Card Q/A</span></a></li>
				<li><a href='http://www.google.com'><span>Frequently Asked Questions</span></a></li>
				
              </ul>
            </li>
          </td>

          <td>
            <li>
              <img alt="Policy" src="https://cdn.vectorstock.com/i/thumb-large/26/57/9082657.jpg" style="width: 112px; height: 117px;" /> Policy
              <ul>
                <li><a href='https://inside.nov.com/PolicyDocs/202%20Travel%20Policy%202016-0826.docx'><span>Policy 202: Travel Guidelines</span></a></li>
                <li><a href='https://inside.nov.com/PolicyDocs/202-1%20Security%20Guidelines%20for%20Traveling%20Outside%20Your%20Home%20Country.doc'><span>Policy Attachment 202-1: Security Guidelines for Traveling Outside Your Home Country</span></a></li>
                <li><a href='https://inside.nov.com/PolicyDocs/202-2%20International%20Travel%20Checklist.pdf'><span>Policy Attachment 202-2: International Travel Checklist</span></a></li>
             </ul>
            </li>
          </td>
		  
          <td>
                  <li><img alt="Tools" src="https://cdn.vectorstock.com/i/thumb-large/11/54/3361154.jpg" style="width: 112px; height: 117px; text-align: center;" /> Tools & Resources
                  <ul>
					<li><a href='http://www.xe.com/travel-expenses-calculator/'><span>Currency Converter</span></a></li>
					<li><a href='http://www.google.com/world'><span>Mileage Calculation</span></a></li>
					<li><a href='https://inside.nov.com'><span>Tips for Expense Reporting</span></a></li>
					<li><a href='https://inside.nov.com'><span>Receipts</span></a></li>
					<li><a href='http://travel.state.gov'><span>Travel Warnings</span></a></li>
					<li><a href='http://www.flightview.com/TravelTools'><span>Flight Tracker Tool</span></a></li>
					<li><a href='http://www.intellicast.com/National'><span>National Weather</span></a></li>
					<li><a href='http://quickaid.com'><span>Airport Information Directories</span></a></li>
					<li><a href='http://cibtvisas.com'><span>Visa Requirements</span></a></li>
					<li><a href='http://www.flightview.com/TravelTools'><span>Mobile Phone - Roaming/Charges</span></a></li>
					
                    </ul>
                  </li>
           </td>

        </tr>
      </tbody>
    </table>

  </ul>
</div>