因此经过几天的研究和干预后,我似乎无法理解这个概念。
我想要完成的是在页面顶部有一个导航栏,其中包含三个组件:
以下是我试图展示所有这些
的方法
function openNav() {
document.getElementById("myNav").style.height = "100%";
}
function closeNav() {
document.getElementById("myNav").style.height = "0%";
}

li{
text-decoration: none;
}
.overlay {
height: 0%;
width: 100%;
position: fixed;
z-index: 1;
top: 0;
left: 0;
background-color: rgb(0,0,0);
background-color: rgba(0,0,0, 0.9);
overflow-y: hidden;
transition: 0.5s;
}
.overlay-content {
position: relative;
top: 25%;
width: 100%;
text-align: center;
margin-top: 0px;
}
.overlay a {
padding: 8px;
text-decoration: none;
font-size: 36px;
color: #818181;
display: block;
transition: 0.3s;
}
.overlay a:hover, .overlay a:focus {
color: #f1f1f1;
}
.overlay .closebtn {
position: absolute;
top: 20px;
right: 45px;
font-size: 60px;
}
header{
width:100%;
background:#1d1f20;
height:60px;
line-height:60px;
}
@media screen and (max-height: 450px) {
.overlay {overflow-y: auto;}
.overlay a {font-size: 20px}
.overlay .closebtn {
font-size: 80%;
top: 15px;
right: 35px;
}
}

<header>
<div>
<img src="" width="50px" height="30px"/>
<img style="margin-left: 620px;" src="" width="50px" height="30px" />
<span style="font-size:30px;cursor:pointer; float: left;" onclick="openNav()">☰</span>
<div id="myNav" class="overlay">
<a href="javascript:void(0)" class="closebtn" onclick="closeNav()">×</a>
<div class="overlay-content">
<ul>
<li><a href="#">Home</a></li>
<li><a href="#">Page1</a></li>
<li><a href="#">Page2</a>
<ul>
<li><a href="#">Page3</a></li>
<li><a href="#">Page4</a></li>
<li><a href="#">Page5</a></li>
</ul>
</li>
<li><a href="#">Page6</a>
<ul>
<li><a href="#">Page7</a></li>
</ul>
</li>
<li><a href="#">Page8</a>
<ul>
<li><a href="#">Page9</a></li>
<li><a href="#">Page10</a></li>
</ul>
</li>
<li><a href="#">Page11</a></li>
</ul>
</div>
</div>
</div>
</header>
&#13;
非常感谢任何帮助或指导。我还在学习! :)谢谢!
答案 0 :(得分:1)
你的汉堡图标浮动到左边。只需将其更改为float:right;
function openNav() {
document.getElementById("myNav").style.height = "100%";
}
function closeNav() {
document.getElementById("myNav").style.height = "0%";
}
span{
float: right !important;
color: white;
}
li{
text-decoration: none;
}
.overlay {
height: 0%;
width: 100%;
position: fixed;
z-index: 1;
top: 0;
left: 0;
background-color: rgb(0,0,0);
background-color: rgba(0,0,0, 0.9);
overflow-y: hidden;
transition: 0.5s;
}
.overlay-content {
position: relative;
top: 25%;
width: 100%;
text-align: center;
margin-top: 0px;
}
.overlay a {
padding: 8px;
text-decoration: none;
font-size: 36px;
color: #818181;
display: block;
transition: 0.3s;
}
.overlay a:hover, .overlay a:focus {
color: #f1f1f1;
}
.overlay .closebtn {
position: absolute;
top: 20px;
right: 45px;
font-size: 60px;
}
header{
width:100%;
background:#1d1f20;
height:60px;
line-height:60px;
}
@media screen and (max-height: 450px) {
.overlay {overflow-y: auto;}
.overlay a {font-size: 20px}
.overlay .closebtn {
font-size: 80%;
top: 15px;
right: 35px;
}
}
<header>
<div>
<img src="" width="50px" height="30px"/>
<img style="margin-left: 620px;" src="" width="50px" height="30px" />
<span style="font-size:30px;cursor:pointer; float: left;" onclick="openNav()">☰</span>
<div id="myNav" class="overlay">
<a href="javascript:void(0)" class="closebtn" onclick="closeNav()">×</a>
<div class="overlay-content">
<ul>
<li><a href="#">Home</a></li>
<li><a href="#">Page1</a></li>
<li><a href="#">Page2</a>
<ul>
<li><a href="#">Page3</a></li>
<li><a href="#">Page4</a></li>
<li><a href="#">Page5</a></li>
</ul>
</li>
<li><a href="#">Page6</a>
<ul>
<li><a href="#">Page7</a></li>
</ul>
</li>
<li><a href="#">Page8</a>
<ul>
<li><a href="#">Page9</a></li>
<li><a href="#">Page10</a></li>
</ul>
</li>
<li><a href="#">Page11</a></li>
</ul>
</div>
</div>
</div>
</header>