Question

我试图用Only CSS制作一个移动导航栏，但是即使checkbox起作用了，它也不起作用。（我更改了

#main-navigation label { display: none;}

到

display: block;

看盒子是否可用。）我用

#toggle

代替

#main-navigation input

但是它没有用...我实际上使用了很多东西，但是我做错了或者我丢失了。请帮助

#nav-bg {
	background-color: gray;
	width: 50%;
	height: 76px;
	right: 0;
	position: absolute;
}
#main-navigation {
	float: right;
}
#main-navigation a {
	text-decoration: none;
	background-color: gray;
	color: black;
	font-size: 16px; /* (default) */
	padding: 29px;
	line-height: 76px;
	margin-left: -3px;
	border-right: solid thin;
	border-right-color: darkgray;
	transition: 800ms;
}
#main-navigation a:hover {
	background-color: black;
	color: ghostwhite;
	transition: 800ms;
	
}
.navigation-active {
	background-color: black !important;
	color: ghostwhite !important;
}
.navigation-active:hover {
	color: gray !important;
}

/* |||------------------------||| */

#main-navigation label {
	display: none;
}
#main-navigation input {
	display: block;
}
@media only screen and (max-width: 950px) {
	#title-bg{
		width: 50%;
	}
	/* {sourced */
	#main-navigation label {
		display: block;
		cursor: pointer;
		float: right;
		font-size: 26px;
		margin: 18px 31.5px;
	}
	#main-navigation {
		display: block;
	}
	#main-navigation nav {
		display: none;
		margin-top: 76px;
		transition: 800ms;
	}
	#main-navigation a {
		display: block;
		padding: 3px;
		font-size: 14.5px;
		text-align: center;
		clear: right;
	}
	#main-navigation input:checked + #main-navigation nav {
		display: block;
	}

<div id="nav-bg">
		<div id="main-navigation">
			<!-- sourced --->
			<input type="checkbox" id="toggle">
			<label for="toggle">&#9776</label>
			<!-- /sourced -->
		<nav>
			<a href="#" class="navigation-active">HOME</a>
			<a href="#">QUESTS</a>
			<a href="#">CONTACT</a>
			<a href="#">ABOUT</a>
		</nav>
		</div>
		
	</div>

Answer 1

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
<style>
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
}

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

.topnav a {
  float: left;
  display: block;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
}

.topnav a:hover {
  background-color: #ddd;
  color: black;
}

.active {
  background-color: #4CAF50;
  color: white;
}

.topnav .icon {
  display: none;
}

@media screen and (max-width: 600px) {
  .topnav a:not(:first-child) {display: none;}
  .topnav a.icon {
    float: right;
    display: block;
  }
}

@media screen and (max-width: 600px) {
  .topnav.responsive {position: relative;}
  .topnav.responsive .icon {
    position: absolute;
    right: 0;
    top: 0;
  }
  .topnav.responsive a {
    float: none;
    display: block;
    text-align: left;
  }
}
</style>
</head>
<body>

<div class="topnav" id="myTopnav">
  <a href="#home" class="active">Home</a>
  <a href="#news">News</a>
  <a href="#contact">Contact</a>
  <a href="#about">About</a>
  <a href="javascript:void(0);" class="icon" onclick="myFunction()">
    <i class="fa fa-bars"></i>
  </a>
</div>



<script>
function myFunction() {
  var x = document.getElementById("myTopnav");
  if (x.className === "topnav") {
    x.className += " responsive";
  } else {
    x.className = "topnav";
  }
}
</script>

</body>
</html>

Answer 2

所以您只需将导航设置为不显示，然后添加此输入[type = checkbox]：checked〜nav { 显示：块； }

#nav-bg {
	background-color: gray;
	width: 50%;
	height: 76px;
	right: 0;
	position: absolute;
}
#main-navigation {
	float: right;
}
#main-navigation a {
	text-decoration: none;
	background-color: gray;
	color: black;
	font-size: 16px; /* (default) */
	padding: 29px;
	line-height: 76px;
	margin-left: -3px;
	border-right: solid thin;
	border-right-color: darkgray;
	transition: 800ms;
}
#main-navigation a:hover {
	background-color: black;
	color: ghostwhite;
	transition: 800ms;
	
}
.navigation-active {
	background-color: black !important;
	color: ghostwhite !important;
}
.navigation-active:hover {
	color: gray !important;
}

/* |||------------------------||| */

#main-navigation label {
	display: none;
}
#main-navigation input {
	display: block;
}
@media only screen and (max-width: 950px) {
	#title-bg{
		width: 50%;
	}
	/* {sourced */
	#main-navigation label {
		display: block;
		cursor: pointer;
		float: right;
		font-size: 26px;
		margin: 18px 31.5px;
	}
	#main-navigation {
		display: block;
	}
	 nav {
		display: none;
		margin-top: 76px;
		transition: 800ms;
	}
	#main-navigation a {
		display: block;
		padding: 3px;
		font-size: 14.5px;
		text-align: center;
		clear: right;
	}
	input[type=checkbox]:checked~nav {
  display: block;
}

<div id="nav-bg">
		<div id="main-navigation">
			<!-- sourced --->
			<input type="checkbox" id="toggle">
			<label for="toggle">&#9776</label>
			<!-- /sourced -->
		<nav>
			<a href="#" class="navigation-active">HOME</a>
			<a href="#">QUESTS</a>
			<a href="#">CONTACT</a>
			<a href="#">ABOUT</a>
		</nav>
		</div>
		
	</div>

为什么该复选框不能用于导航？

2 个答案: