所以我很困惑div如何连接,父母必须是亲戚(或固定????),孩子必须是绝对的,但我想要一个与此网站相同的顶级菜单,这意味着我需要使用属性的顶部菜单div 位置:绝对; 顶部:0px; 但是这意味着如果将其设置为相对
,则无法将下方的div刷新到顶部菜单
react-router

v1.0.1-myname

我真的不想用 上:55px; 从屏幕上看,因为它在向下滚动页面时会变得奇怪 我搜索了这种情况,但我找不到任何答案,可能看起来不够好....谢谢你们!
答案 0 :(得分:0)
从正文中删除填充和边距,并以正常方式定位子菜单,在FF,Chrome,IE中正常工作:
html, body {
background-color: #E8E8E8;
padding: 0;
margin: 0;
}
/* Div Body Start */
#container {
width: 100%
height: 100%;
}
#topmenu {
opacity: 0.6; /* css standard */
filter: alpha(opacity=60); /* internet explorer */
width: 100%;
height: 70px;
background-color: black;
color: white;
}
#topmenu:hover {
opacity: 1; /* css standard */
filter: alpha(opacity=100); /* internet explorer */
}
#banner {
position: absolute;
clear: both;
left: 0;
right: 0;
width: 750px;
height: 100px;
color: white;
text-align: center;
margin-left: auto;
margin-right: auto;
font-family: Arial, Helvetica, sans-serif;
font-size: 30px;
border-top: 5px solid black;
background: #00015E; /* For browsers that do not support gradients */
background: -webkit-linear-gradient(#00015E, #3943FF); /* For Safari 5.1 to 6.0 */
background: -o-linear-gradient(#00015E, #3943FF); /* For Opera 11.1 to 12.0 */
background: -moz-linear-gradient(#00015E, #3943FF); /* For Firefox 3.6 to 15 */
background: linear-gradient(#00015E, #3943FF); /* Standard syntax */
height: 15%
}
/* Div Body End */
/* Top Menu Script Start */
ul {
list-style-type: none;
margin: 0;
padding: 0;
overflow: visable;
background-color: black;
height: 50px;
border-bottom: 5px solid black;
margin:auto;
display:block;
}
li {
float: left;
}
li a {
display: block;
color: white;
text-align: center;
padding: 14px 16px;
text-decoration: none;
}
li a:hover {
background-color: lime;
}
/* Top Menu Script End */
<div id="container">
<div id="topmenu">
<ul>
<li><a href="#">Skills</a></li>
<li><a href="#contact">Education</a></li>
<li><a href="#news">Work</a></li>
<li><a href="#contact">Hobbys</a></li>
<li><a href="#contact">Contact</a></li>
<li style="float:right"><a href="index.html"><img class="topimages" src="images/icons/icon-home1.png" width="35" height="35"></a></li>
</ul>
</div><!-- End topmenu -->
<div id="banner">
</div>
</div><!-- End container -->