我有一个CSS3菜单。当菜单项文本太长时，设计会中断。我希望文本简单地向上移动以适应 文本。例如：在www.casa.gov.au，菜单项文本REGULATIONS AND POLICY开始高于其余部分 的项目。这可以防止菜单宽度和高度更改以适应较大的文本。
我如何使用JS FIDDLE中附带的菜单执行此操作：http://jsfiddle.net/UU4rm/
问题与#css li a {}
的行高有关/* MENU */
#cssmenu {
border:none;
border:0px;
margin:0px;
padding:0px;
font-size:12px;
font-weight:bold;
border-bottom: solid 1px rgb(77,77,77);
}
#cssmenu ul {
background:#333333;
height:39px;
list-style:none;
margin:0;
padding:0;
display: table;
width: 100%;
}
#cssmenu li {
padding:0px;
display: table-cell;
width: 115px;
}
#cssmenu li a {
background:#333333 url('../images/seperator.gif') bottom right no-repeat;
color:#FFF;
display:block;
font-weight:normal;
line-height:39px;
margin:0px;
padding:0px 0px;
text-align:center;
text-decoration:none;
width: 115px;
}
#cssmenu li a:hover,
#cssmenu ul li:hover a,
#cssmenu li a:focus,
#cssmenu ul li:focus a{
background: #2580a2;
color:#FFFFFF;
text-decoration:none;
float: none;
}
#cssmenu li ul {
background:#333333;
display:none;
height:auto;
padding:0px;
margin:0px;
border:0px;
position:absolute;
width:230px;
z-index:200;
/*top:1em;
/*left:0;*/
}
#cssmenu li.force-show ul,
#cssmenu li:hover ul,
#cssmenu li a:focus + ul{
display:block;
}
#cssmenu li li {
background:url('../images/sub_sep.gif') bottom left no-repeat;
display:block;
float:none;
margin:0px;
padding:0px;
width:230px;
}
#cssmenu li:hover li a,
#cssmenu li:focus li a {
background:none;
}
#cssmenu li ul a {
display:block;
height:35px;
font-size:11px;
font-style:normal;
margin:0px;
padding:0px 10px 0px 15px;
text-align:left;
width: 205px;
}
#cssmenu li ul a:hover,
#cssmenu li ul li:hover a,
#cssmenu li ul a:focus,
#cssmenu li ul li:focus a{
background:#2580a2 url('../images/hover_sub.gif') center left no-repeat;
border:0px;
color:#ffffff;
text-decoration:none;
width: 205px;
}
#cssmenu p {
clear:left;
}
:focus {
outline:none;
}
::-moz-focus-inner {
border:0;
}
<div id="cssmenu"> <ul> <li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:HOMEPAGE:1017433626:pc=PC_90001">Home</a></li>
<li class="has-sub"> <a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_90002">Operations</a> <ul>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_90003">Individuals</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_90123">Aircraft owners</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_90276">Aircraft operators</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_90389">Flight training</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_90405">Aerodromes</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_90447">Office of airspace regulation</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_93439">Sport aviation</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_93379">Class D</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_100058">Non-towered aerodromes</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_90385">Dangerous goods</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_100808">Ground operations</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_100847">Non-compliance notice</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_100374">Unmanned Aircraft Systems (UAS)</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_100705">General Aviation (GA) task force </a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_100852">Regional Aviation Safety Forum (RASF)</a>
</li>
<li><a href="http://casa.gov.au/aod" target="_top">Drug and Alcohol Management Plans</a>
</li>
</ul></li>
<li class="has-sub"> <a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_90473">Airworthiness</a> <ul>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_100610">Maintenance regulations</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_90474">Personnel</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_90496">Certification and design</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_90507">Manufacturing</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_90515">Continuing airworthiness</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_90822">Airworthiness directives</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_90821">Maintenance organisations</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_101038">Flight test and evaluation</a>
</li>
</ul></li>
<li class="has-sub"> <a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_90900">Regulations & Policy</a> <ul>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_90902">Current rules</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:PWA:1017433626:pc=PC_91070">Changing the rules</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_91181">Enforcement action</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:PWA:1017433626:pc=PC_91190">Policy notices</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_100396">Australia's state safety program</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_101078">Performance based navigation (PBN)</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_101326">Licensing regulations</a>
</li>
</ul></li>
<li class="has-sub"> <a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_91263">Manuals & forms</a> <ul>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_91264">Manuals</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_91308">Forms</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_91316">CASA online store</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_101402">Temporary Management Instructions (TMIs)</a>
</li>
</ul></li>
<li class="has-sub"> <a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_91314">Education</a> <ul>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_101349">AviationWorx</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_100101">eLearning catalogue</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_91346">Flight Safety Australia</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_90006"> Pilot guides and information </a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_100138">OnTrack</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_100994">Human factors</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_91430">Safety management systems</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_91329">Seminars and workshops</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_91317">Aviation safety advisers</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_91455">Advice for air travellers</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_91316">CASA online store</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_101317">Out-n-Back</a>
</li>
</ul></li>
<li class="has-sub"> <a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_91488">Services</a> <ul>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_91489">Licences & registrations</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:SSP:1017433626:pc=PC_91499">Self Service Portal</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_91510">Service standards & fees</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_91517">Permission application centre (PAC)</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_91521">Aviation medicals</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_100450">Delegates and authorised persons</a>
</li>
</ul></li>
<li class="has-sub"> <a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_91621">About CASA</a> <ul>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_91622">Contact CASA</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_93342">CASA board</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_91668">CASA's Director</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_91703">Recent media releases</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_92568">Corporate publications</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_100448">CASA on Twitter</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_92918">Corporate policy</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_92936">Careers at CASA</a>
</li>
<li><a href="HTTP://wcmstest/scripts/nc.dll?WCMS:STANDARD:1017433626:pc=PC_92956">Research and statistics</a>
</li>
</ul></li>
</ul>
</div>
答案 0 :(得分：0)
在我看来（在FF中），它是底部边框属性导致菜单下出现愚蠢的黑线。
#cssmenu {
border-bottom: solid 1px rgb(77,77,77);
}
消除底部边框属性，并在菜单项中添加附加文本（导致换行/第二行）按预期执行。