我正在尝试创建一个图片库，并使其垂直和水平居中于页面，无论屏幕的大小如何。水平定心并不是一个问题，但我不能让垂直居中工作。
HTML：
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CSS：
<style>
html {
position: relative;
min-height: 100%;
}
body {
background: #232526;
background: -webkit-linear-gradient(to right, #232526 , #414345);
background: linear-gradient(to right, #232526 , #414345);
margin: 0em;
}
a { cursor: pointer; cursor: hand; }
footer {
position: fixed;
width: 100%;
bottom: 0;
height: 130px;
background: #e4e6e5;
background-color: rgba(228,230,229,.9);
transform: translateZ(0);
-webkit-transform: translateZ(0);
border-top: solid transparent 5px;
}
#content{
padding: 50px 0 0 0;
}
#text-content{
padding: 175px 0 0 0;
}
img{ max-width: 100%; height: 80%; width: auto\\9; /* ie8 */ }
.col-aligncenter{float: none;margin: 0 auto;}
.custom-container {
padding-left: 100px;
padding-right: 100px;
}
</style>
JS：
document.getElementById("home").onclick = function () {
location.href = "Home.html";
};
document.getElementById("warrior").onclick = function () {
location.href = "Warrior.html";
};
document.getElementById("druid").onclick = function () {
location.href = "Druid.html";
};
document.getElementById("priest").onclick = function () {
location.href = "Priest.html";
};
document.getElementById("paladin").onclick = function () {
location.href = "Paladin.html";
};
document.getElementById("hunter").onclick = function () {
location.href = "Hunter.html";
};
document.getElementById("mage").onclick = function () {
location.href = "Mage.html";
};
document.getElementById("shaman").onclick = function () {
location.href = "Shaman.html";
};
document.getElementById("warlock").onclick = function () {
location.href = "Warlock.html";
};
document.getElementById("rogue").onclick = function () {
location.href = "Rogue.html";
};
document.getElementById("minions").onclick = function () {
location.href = "Minions.html";
};
document.getElementById("spells").onclick = function () {
location.href = "Spells.html";
};
$(document).ready(function(e) {
var lis = $('.nav > li');
menu_focus( lis[0], 1 );
$(".fancybox").fancybox({
padding: 10,
helpers: {
overlay: {
locked: false
}
}
});
});
答案 0 :(得分：0)
使用margin：0 auto可以轻松解决水平居中问题。另一方面，垂直居中一直很棘手。好消息：Flexbox做了很多事情，其中包括水平和垂直居中。
你的代码非常混乱，所以我将简要介绍一下如何使用flexbox。
当flex-direction设置为row（默认值）时，justify-content：center;水平居中，对齐项目：center;垂直居中。
注意：我在包装器上使用100vw和100vh来演示居中。
.gallery img {
width: 500px;
height: auto;
}
.wrapper {
background: #f9f9f9;
width: 100vw;
height: 100vh;
}
.gallery {
display: flex;
justify-content: center;
align-items: center;
width: 100%;
height: 100%;
}<div class="wrapper">
<div class="gallery">
<img src="https://assets.entrepreneur.com/content/16x9/822/1413823428-amazingly-free-stock-websites.jpg" />
</div>
</div>
答案 1 :(得分：0)
也许尝试使用此代码：
#content {
position: relative;
height: 150px;
}
.custom-container {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
width: 404px;
}