我具有以下CSS，并且效果很好。但是，我有大约50 li。有没有一种方法可以自动添加列并显示10列？我尝试了：float;但是看起来很讨厌。我尝试了列计数：3带列隙：10px，但对li没有影响(只是更改UL的宽度(
我在JSFiddle上具有HTML和CSS，如果有帮助。https://jsfiddle.net/zq54cb2b/
#cssmenu ul li {
padding: 7px 7px;
color: #000000;
background-color: #cce5ff;
border-bottom: 1px solid #f1f5f9;
}
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>