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javascript - 将叠加层的内容放在中间

转载 作者:行者123 更新时间:2023-11-28 04:01:03 27 4
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目标:
覆盖内容应位于页面中间。

问题:
我无法使叠加内容(白框)位于中间。我缺少什么语法?

谢谢!

function openNav() {
document.getElementById("myNav").style.height = "100%";
}

function closeNav() {
document.getElementById("myNav").style.height = "0%";
}
body {
margin: 0;
font-family: 'Lato', sans-serif;
}

.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, 0.8);
overflow-y: hidden;
transition: 0.5s;
}

.overlay-content {
position: relative;
top: 10%;
width: 70%;
text-align: left;
margin-top: 30px;
background: white
}

.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;
}

@media screen and (max-height: 450px) {
.overlay {overflow-y: auto;}
.overlay a {font-size: 20px}
.overlay .closebtn {
font-size: 40px;
top: 15px;
right: 35px;
}
}
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width">
<title>JS Bin</title>
</head>
<body>

<div id="myNav" class="overlay">
<a href="javascript:void(0)" class="closebtn" onclick="closeNav()">&times;</a>
<div class="overlay-content">
<a href="#">About</a>
<a href="#">Services</a>
<a href="#">Clients</a>
<a href="#">Contact</a>
</div>
</div>

<h2>Fullscreen Overlay Nav Example</h2>
<p>Click on the element below to open the fullscreen overlay navigation menu.</p>
<p>In this example, the navigation menu will slide downwards from the top:</p>

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<span style="font-size:30px;cursor:pointer" onclick="openNav()">&#9776; open</span>

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</body>
</html>

最佳答案

你可以试试这个:

.overlay-content {
position: relative;
top: 10%;
width: 70%;
text-align: left;
margin: 30px auto;
background: white
}

关于javascript - 将叠加层的内容放在中间,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/43202130/

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