我想根据下拉菜单中的选择更改网格框的背景颜色，但我不知所措。如果选择 A/3，框 1-3 将发生变化。如果选择 C/10，框 1-10 将发生变化。这是我的第一个 web 开发元素，所以我可能会处理这个错误。如果是这样，请告诉我。感谢您的帮助!
.menu
{
overflow: hidden;
background-color: #29648A;
margin:0 auto;
}
.dropdown
{
float: left;
overflow: hidden;
width: 25%;
}
.button
{
font-size: 16px;
border: none;
outline: none;
color: white;
padding: 10px 10px;
background-color: inherit;
width: 100%;
text-align: center;
}
.dropdown:hover
{
background-color: #2E9CCA;
}
.list
{
display: none;
position: absolute;
background-color: #F9F9F9;
box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
width: 24.65%;
}
.list a
{
float: none;
color: black;
padding: 12px 16px;
text-decoration: none;
display: block;
text-align: center;
}
.list a:hover
{
background-color: #ddd;
}
.dropdown:hover .list
{
display: block;
}
.wrapper
{
display: grid;
grid-template-columns: repeat(4, 1fr);
grid-template-rows: repeat(4, 100px);
grid-gap: 10px;
max-width: 400px;
margin: 50px auto;
}
.box
{
background-color: #AAABB8;
color: white;
text-align: left;
font-size: 20px;
padding: 10px 10px;
border-radius: 5px;
max-width: 100px;
}<!DOCTYPE html>
<html>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<head>
</head>
<body>
<div class="menu">
<div class="dropdown">
<button class="button">A</button>
<div class="list">
<a href="#">1</a>
<a href="#">2</a>
<a href="#">3</a>
<a href="#">4</a>
</div>
</div>
<div class="dropdown">
<button class="button">B</button>
<div class="list">
<a href="#">5</a>
<a href="#">6</a>
<a href="#">7</a>
<a href="#">8</a>
</div>
</div>
<div class="dropdown">
<button class="button">C</button>
<div class="list">
<a href="#">9</a>
<a href="#">10</a>
<a href="#">11</a>
<a href="#">12</a>
</div>
</div>
<div class="dropdown">
<button class="button">D</button>
<div class="list">
<a href="#">13</a>
<a href="#">14</a>
<a href="#">15</a>
<a href="#">16</a>
</div>
</div>
</div>
<section>
<div class="wrapper">
<div class="box">1</div>
<div class="box">2</div>
<div class="box">3</div>
<div class="box">4</div>
<div class="box">5</div>
<div class="box">6</div>
<div class="box">7</div>
<div class="box">8</div>
<div class="box">9</div>
<div class="box">10</div>
<div class="box">11</div>
<div class="box">12</div>
<div class="box">13</div>
<div class="box">14</div>
<div class="box">15</div>
<div class="box">16</div>
</div>
</section>
</body>
</html>最佳答案
您可以使用 addClass() & removeClass()使用 jquery 向每个框添加一些具有不同 id 的 if 语句，并将其用作选择器以将每一列连接到它自己的框! 试试看，如果需要我可以提供帮助。
关于html - CSS改变网格框的可变范围，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/47973448/