【发布时间】：2020-08-14 19:35:21
【问题描述】：
我创建了一个导航栏，当您滚动它时，它会停留在页面顶部，但我的下拉菜单无法正常工作。下拉菜单会显示，但主要内容会向下移动，下拉菜单内容会跨越显示的宽度。我不得不再次编辑它，因为我的一些代码丢失了......任何帮助将不胜感激。谢谢
body {
font-size: 28px;
}
ul {
list-style-type: none;
margin: 0;
padding: 0;
overflow: hidden;
background-color: #333;
position: -webkit-sticky; /* Safari */
position: sticky;
top: 0;
}
li {
float: left;
}
li a, .dropbtn {
display: inline-block;
color: white;
text-align: center;
padding: 14px 16px;
text-decoration: none;
}
li a:hover, .dropdown:hover .dropbtn {
background-color: #111;
}
.active {
background-color: #4CAF50;
}
li.dropdown {
display: inline-block;
}
.dropdown-content {
display: none;
position: sticky;
background-color: #f9f9f9;
min-width: 160px;
box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
z-index: 1;
}
.dropdown-content a {
color: black;
padding: 12px 16px;
text-decoration: none;
display: block;
text-align: left;
}
.dropdown-content a:hover {background-color: #f1f1f1;}
.dropdown:hover .dropdown-content {
display: block;
} <!DOCTYPE html>
<html>
<head>
</head>
<body>
<div class="header">
<h2>Scroll Down</h2>
<p>Scroll down to see the sticky effect.</p>
</div>
<ul>
<li><a class="active" href="#home">Home</a></li>
<li><a href="#news">News</a></li>
<li><a href="#contact">Contact</a></li>
<li class="dropdown">
<a href="javascript:void(0)" class="dropbtn">Dropdown</a>
<div class="dropdown-content">
<a href="#">Link 1</a>
<a href="#">Link 2</a>
<a href="#">Link 3</a>
</div>
</li>
</ul>
<h3>Added text for scrolling</h3>
<p>Some text to enable scrolling. Lorem ipsum dolor sit amet, illum definitiones no quo,
maluisset concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam
omnis evertitur eum. Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum
no molestiae voluptatibus.</p>
<p>Some text to enable scrolling. Lorem ipsum dolor sit amet, illum definitiones no quo,
maluisset concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam
omnis evertitur eum. Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum
no molestiae voluptatibus.</p>
<p>Some text to enable scrolling. Lorem ipsum dolor sit amet, illum definitiones no quo,
maluisset concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam
omnis evertitur eum. Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum no
molestiae voluptatibus.</p>
<p>Some text to enable scrolling. Lorem ipsum dolor sit amet, illum definitiones no quo,
maluisset concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam
omnis evertitur eum. Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum no
molestiae voluptatibus.</p>
<p>Some text to enable scrolling. Lorem ipsum dolor sit amet, illum definitiones no quo,
maluisset concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam
omnis evertitur eum. Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum no
molestiae voluptatibus.</p>
<p>Some text to enable scrolling. Lorem ipsum dolor sit amet, illum definitiones no quo,
maluisset concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam
omnis evertitur eum. Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum no
molestiae voluptatibus.</p>
<p>Some text to enable scrolling. Lorem ipsum dolor sit amet, illum definitiones no quo,
maluisset concludaturque et eum, altera fabulas ut quo. Atqui causae gloriatur ius te, id agam
omnis evertitur eum.
Affert laboramus repudiandae nec et. Inciderint efficiantur his ad. Eum no molestiae
voluptatibus.
</p>
</body>
</html>【问题讨论】：
-
你在说什么下拉菜单？
-
请再次解释你到底是什么失败了。
-
编辑了缺失的代码