我想推动父div下5px的子div。当我把margin-top:5px;在内部div上,它会从父级div上方的div下推内部div和父级div,但不会从父级div推下内部div。如何设置它,以便只有内部div从父div下推5px?我不希望父div从它上面的div中推下去。谢谢你的帮助。内部div的CSS边缘顶部推父母div下来
的HTML导航:
<nav>
<div class="nav-container">
<div id="cat_14623_divs">
<ul id="nav_14623">
<li><a href="#" onclick="return false;">AKINA & RED LAKE</a</li>
<li><a href="#" onclick="return false;">FRESH WILD CAUGHT FISH</a>
<ul id="navsub_14623_2326">
<li><a href="#" onclick="return false;">WALLEYE</a></li>
<li><a href="#" onclick="return false;">PERCH</a></li>
<li><a href="#" onclick="return false;">CRAPPIE</a></li>
<li><a href="#" onclick="return false;">NORTHERN</a></li>
<li><a href="#" onclick="return false;">WHITEFISH</a></li>
</ul></li>
<li><a href="#" onclick="return false;">NEWS FROM THE FISHERY</a></li>
<li><a href="#" onclick="return false;">CONTACT US</a></li>
<li class="last"><a href="#" onclick="return false;">FAQs</a></li>
</ul>
</div>
</div>
</nav>
CSS的导航:
nav{
position:relative;
width:960px;
background-color:#660000;
height:40px;
}
div.nav-container{
position:relative;
width:100%;
}
#cat_14623_divs{
margin-top:5px;
height:30px;
background-color:#520000;
width:960px;
}
#nav_14623{
list-style:none;
display:block;
padding:0;
width:80%;
margin:0 auto;
}
#nav_14623 li{
position:relative;
float:left;
padding: 0.5em 1.5em;
margin: 0px;
font-size:12px;
border-right:solid 2px #fff;
text-align:center;
}
#nav_14623 li.last{
border-right:none;
padding-right:5px;
}
#nav_14623 li a{
color:#FFF;
text-decoration:none;
}
#nav_14623 ul{
position: absolute;
left:0;
top: 100%;
display: none;
padding: 0 1000em; /* trick from css-tricks comments */
margin: 0 -1000em; /* trick from css-tricks comments */
list-style: none;
margin-left: 0px;
margin: 0;
padding: 5px;
width:200px;
z-index: 1000;
background: #660000;
border-left: 1px solid #336699;
border-right: 1px solid #336699;
border-bottom: 1px solid #336699;
border-top: none;
}
#nav_14623 ul li{
position: relative;
float: none;
border-right: none;
padding:0;
margin: 0;
}
#nav_14623 ul li a{
color: #fff;
font-size: 12px;
vertical-align: middle;
line-height:32px;
width: 100%;
height:35px;
display:block;
}
#nav_14623 ul li a:hover{
background: #520000;
width: 100%;
}
#nav_14623 li:hover > ul{
display: block;
}
#nav_14623:after {
content: ""; clear: both; display: block;
}
这里是你想看到的网站在案件的网址:上 http://redlakewalleye.designangler.com/
这称为* margin collapse *。 – cimmanon