0

我是设计网页的新手。最近，我正在尝试设计我的网站并将 Topbar 与下拉悬停，但它不起作用。我正在使用 W3School 的教程。我把我的代码放在下面，也许有人可以告诉我我做错了什么。谢谢

.dropdown {
  float: left;
  overflow: hidden;
}

.dropdown .dropbtn {
  border: none;
  outline: none;
  padding: 14px 20px;
  margin: 0;
}

.dropdown-content {
  display: none;
  position: absolute;
  min-width: 160px;
  z-index: 1;
}

.dropdown:hover .dropdown-content {
  display: block;
}

.dropdown-content a {
  float: none;
  color: black;
  padding: 12px 16px;
  text-decoration: none;
  display: block;
  text-align: left;
}
<div class="navbar">
  <a class="active" href="/try/front.php">Logo</a>
  <a class="active" href="rightMain.php">Name</a>
  <a class="active" href="rightPage1.php">Menu1</a>
  <div class="dropdown">
    <button class="dropbtn">Dropdown</button>
    <div class="dropdown-content">
      <a href="#">Link 1</a>
      <a href="#">Link 2</a>
    </div>
  </div>
</div>

4

2 回答 2

0

您需要将:hover选择器添加到下拉列表中的链接。

在您的情况下，只需将以下内容添加到您的样式表中。

.dropdown-content a:hover{
  background: blue;
}

完整的代码片段：

.dropdown {
  float: left;
  overflow: hidden;
}

.dropdown .dropbtn {
  border: none;
  outline: none;
  padding: 14px 20px;
  margin: 0;
}

.dropdown-content {
  display: none;
  position: absolute;
  min-width: 160px;
  z-index: 1;
}

.dropdown:hover .dropdown-content {
  display: block;
}

.dropdown-content a {
  float: none;
  color: black;
  padding: 12px 16px;
  text-decoration: none;
  display: block;
  text-align: left;
}

.dropdown-content a:hover{
  background: blue;
}
<div class="navbar">
  <a class="active" href="/try/front.php">Logo</a>
  <a class="active" href="rightMain.php">Name</a>
  <a class="active" href="rightPage1.php">Menu1</a>
  <div class="dropdown">
    <button class="dropbtn">Dropdown</button>
    <div class="dropdown-content">
      <a href="#">Link 1</a>
      <a href="#">Link 2</a>
    </div>
  </div>
</div>

于 2021-01-20T07:27:53.277 回答
0

解决了，这是因为我放置了固定的导航栏，当我删除它时，下拉菜单正在工作。

之前的代码是：

.navbar {
  overflow: hidden;
  background-color: #333;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
}

.navbar a {
  float: left;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 20px;
  text-decoration: none;
}

.dropdown {
  float: left;
  overflow: hidden;
}

.dropdown .dropbtn {
  font-size: 16px;
  border: none;
  outline: none;
  color: white;
  padding: 14px 20px;
  background-color: inherit;
  font-family: inherit;
  margin: 0;
}

.navbar a:hover, .dropdown:hover .dropbtn {
  background: #ddd;
  color: black;
 }

.dropdown-content {
  display: none;
  position: absolute;
  background-color: #f9f9f9;
  min-width: 160px;
  box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
  z-index: 1;
}

.dropdown-content a {
  float: none;
  color: black;
  padding: 12px 16px;
  text-decoration: none;
  display: block;
  text-align: left;
}

.dropdown-content a:hover {
  background-color: blue;
}

.dropdown:hover .dropdown-content {
  display: block;
}

然后就变成了

.navbar {
  overflow: hidden;
  background-color: #333;
}

.navbar a {
  float: left;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 20px;
  text-decoration: none;
}

.dropdown {
  float: left;
  overflow: hidden;
}

.dropdown .dropbtn {
  font-size: 16px;
  border: none;
  outline: none;
  color: white;
  padding: 14px 20px;
  background-color: inherit;
  font-family: inherit;
  margin: 0;
}

.navbar a:hover, .dropdown:hover .dropbtn {
  background: #ddd;
  color: black;
 }

.dropdown-content {
  display: none;
  position: absolute;
  background-color: #f9f9f9;
  min-width: 160px;
  box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
  z-index: 1;
}

.dropdown-content a {
  float: none;
  color: black;
  padding: 12px 16px;
  text-decoration: none;
  display: block;
  text-align: left;
}

.dropdown-content a:hover {
  background-color: blue;
}

.dropdown:hover .dropdown-content {
  display: block;
}
于 2021-01-22T04:31:55.547 回答