Question

如何在HTML页面上垂直居中我的DIV？我认为通过将余量设置为0 auto可以解决问题，但事实并非如此，因为它只是水平居中并且不会在页面上垂直居中我的#main div

这是一个快速的小提琴：https://jsfiddle.net/stevdbbz/

以下是有问题的HTML和CSS：

<!DOCTYPE html>

<html>

<head>

<style type="text/css">
* {
    font-family: Segoe UI;
    font-size: 9pt;
    box-sizing: border-box;
}
body {
    background: rgb(70,70,70);
    padding: 0;
    margin: 0;
}
#main {
    border: 1px solid rgb(180,180,180);
    width: 800px;
    height: 650px;
    margin: 0 auto;
}
#boxA {
    padding-top: 7px;
    padding-bottom: 7px;
    padding-left: 3px;
    border-bottom: 1px solid rgb(180,180,180);
    background: #FFF;
}
#boxB {
    height: 573px;
    width: 200px;
    border: 0;
    float: left;
    background: #FFF;
}
#boxC {
    background: rgb(240,240,240);
    height: 573px;
    width: 598px;
    border-left: 1px solid rgb(180,180,180);
    border-top: 0;
    border-bottom: 0;
    border-right: 0;
    display: inline-block;
}
#boxD {
    background: rgb(240,240,240);
    border-top: 1px solid rgb(180,180,180);
    height: 44px;
    text-align: center;
    display: table;
    width: 100%;
}
#menu {
    list-style-type: none;
    padding: 0;
    margin: 0;
}
#menu li {
    padding: 4px;
        border: 1px solid #FFF;
}
#menu li:hover {
    cursor: pointer;
}
.selected {
    background: rgb(51,153,255);
    color: #FFF;
    border: 1px solid #FFF;
    font-weight: bold;
}
.hidden{ display:none; }


.item {
    width: 100%;
    height: 100%;
}


input[type="button"] 
{
  cursor:pointer; 
  border: 1px solid #707070;
  background-color: #F0F0F0;
  border-radius: 4px;
  box-shadow: inset 0 1px 2px #fff, inset 0 -0.7em #DDD;
  background-image: -ms-linear-gradient(top, #F1F1F1 0%, #E3E3E3 50%, #D0D0D0 100%);
  padding: 3px 6px;
  width: 75px;
}

input[type="button"]:hover 
{
  cursor:pointer;
  background-color: #EAF6FD;
  border: 1px solid #3C7FB1;
  box-shadow: inset 0 1px 2px #fff, inset 0 -0.7em #BEE6FD, 0 0 3px #A7D9F5;
}

input[type="button"][disabled], input[type="button"][disabled]:hover

{
  border: 1px solid #ADB2B5;
  text-shadow: 1px 1px #fff;
  cursor:default;
  background-color: #F4F4F4;
  box-shadow: inset 0 1px 2px #fff;
}












</style>

</head>

<body>

        <div id="main">

            <div id="boxA"><b>Application Title</b></div>

            <div id="boxB">
                <ul id="menu">
                    <li data-show="#1">Menu Item 1</li>
                    <li data-show="#2">Menu Item 2</li>
                    <li data-show="#3">Menu Item 3</li>
                </ul>
            </div>

            <div id="boxC">
                <div id="1" class="hidden item">
                    <b>Content Tab 1</b>
                </div>
                <div id="2" class="hidden item">
                    Content Tab 2
                </div>
                <div id="3" class="hidden item">
                    Content Tab 3
                </div>
            </div>

            <div id="boxD">

                <div style="display: table-cell; vertical-align: middle;">
                    <input type="button" value="Search" class="btn" disabled>
                    <input type="button" value="Save" class="btn" disabled>
                    <input type="button" value="Add" class="btn" disabled>
                    <input type="button" value="Clear All" class="btn">
                    <input type="button" value="Delete" class="btn" disabled>
                    <input type="button" value="Export" class="btn" disabled>
                    <input type="button" value="Recall" class="btn" disabled>
                </div>

            </div><!-- End of Main -->

</body>

</html>

Answer 1

您可以display:table;

执行此操作

Jsfiddle

Answer 2

您可以使用 3个简单规则将元素相对于视口垂直居中：

#main {
    position: relative;
    top: 50vh; // positions the top edge of the element 50% down the viewport
    margin: -325px auto 0; // moves the top edge down the element by 325px (650px height / 2)

    border: 1px solid rgb(180,180,180);
    width: 800px;
    height: 650px;
}

Answer 3

您可以使用flexbox。这是一个例子：

<div class="middle-align">
        <p>This is a vertically centered paragraph</p>
    </div>
</div>

和css

.middle-align {
    height:400px;
    background-color:gray;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    -ms-flex-align: center;
    -webkit-align-items: center;
    -webkit-box-align: center;
    align-items: center;
}

https://jsfiddle.net/p6yoka9c/

在HTML页面上垂直居中DIV

3 个答案: