Index.html
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="/Main_Page.css">
</head>
<body>
<nav>
<ul class="navbar-container center">
<a id="home-menu-block" href="" class="navbar-logo">
<img src="resources/images/logo2.png" alt="hi-site.kr" id="navbar-logo-image">
</a>
<div class="center">
<li id="school-info-menu-block" class="navbar-block"><a href= "school-info" class="navbar-content">School Info</a></li>
<li id="community-menu-block" class="navbar-block"><a href="/community" class="navbar-content">Community</a></li>
<li id="school-notice-menu-block" class="navbar-block"><a href="/school-notice" class="navbar-content">School notice</a></li>
</div>
<div class="right">
<li id="account-menu-block" class="navbar-block"><a href="/account" class="navbar-content">Account</a></li>
</div>
</ul>
</nav>
<section>
</section>
<footer>
</footer>
</body>
</html>
Main_Page.css
ul.navbar-container{
width:70%;
display:block;
list-style-type: none;
padding:0;
border-bottom:#111;
margin-top: 50px;
}
.center{
margin-top:50px;
position: absolute;
left: 50%;
transform: translate(-50%, -50%);
}
.right{
margin-top:50px;
position: absolute;
right:0%;
transform: translate(-50%, -50%);
}
.navbar-logo{
float:left;
}
#navbar-logo-image{
width:100px;
height:100px;
-webkit-user-select: none;
user-select: none;
}
li.navbar-block {
float: left;
border:0px;
}
.navbar-content{
padding: 10px 12px;
display: inline-block;
text-align: center;
color: black;
text-decoration: none;
-webkit-user-select: none;
user-select: none;
}
.navbar-content:hover, .navbar-content-activated {
background-color: yellow;
}
#account-menu-block{
border:2px solid black;
}
如果我把一些东西放到部分中，它会被放在屏幕的顶部，因为导航的高度是零.但作为导航元素的唯一子元素，ul的高度不是零，并且它的显示是块.为什么导航不能扩张？