在另一个div内水平和垂直居中放置div [英] Center div horizontally and vertically inside another div

问题描述

我对在另一个div内水平和垂直居中放置一个元素有疑问.

I have a question regarding centering an element horizontally and vertically inside of another div.

我正在为一个客户的网站工作，这是给我麻烦的页面: http://staging.slackrmedia.com/halfpast/brand_collection_bremont.html

I am working on a website for a client, and here is the page that is giving me trouble: http://staging.slackrmedia.com/halfpast/brand_collection_bremont.html

因此，当您将鼠标悬停在图片上时，您会看到一个显示查看收藏夹"的链接.我正在使用CSS3过渡和不透明度来设置样式，但是我遇到一个问题:我需要此视图集合"链接在其所在的div内水平和垂直居中.

So when you hover over an image, you see a link that says "View Collection". I'm styling this using CSS3 transitions and opacity, but I'm having one issue: I need this "View Collection" link to center horizontally and vertically inside of the div in which it sits.

这是我的代码与jsFiddle的链接: http://jsfiddle.net/T2n5b/4/

Here is a link to the jsFiddle with my code: http://jsfiddle.net/T2n5b/4/

HTML

<h2>Bremont Collections</h2>

<div class="row text-center uppercase">
    <div class="col-1-3">
        <img src="http://staging.slackrmedia.com/halfpast/images/watches/alt1-p.png" alt="ALT1-P Pilot" />  <a href="" class="btn small">View Collection</a>
        <a href="">ALT1-P Pilot</a>
    </div><!-- .col-1-3 -->

    <div class="col-1-3">
        <img src="http://staging.slackrmedia.com/halfpast/images/watches/solo-37.png" alt="Supermarine" />  <a href="" class="btn small">View Collection</a>
    <a href="">Solo-37</a>

    </div><!-- .col-1-3 -->

    <div class="col-1-3">
        <img src="http://staging.slackrmedia.com/halfpast/images/watches/bc-f1.png" alt="BC-F1" />  <a href="" class="btn small">View Collection</a>
        <a href="">BC-F1</a>
    </div><!-- .col-1-3 -->
</div><!-- .row -->

CSS

/* Buttons
   ============================= */
 .btn {
    background: #c60202;
    border-bottom: 1 px solid rgba(0, 0, 0, 0.1);
    border: 0;
    color: #fff;
    cursor: pointer;
    display: inline-block;
    font-size: 1em;
    height: 45px;
    line-height: 2.9;
    margin: 0px;
    padding: 0 40px;
    position: relative;
    text-align: center;
    text-decoration: none;
    vertical-align: bottom;
    width: auto;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    font-smoothing: antialiased;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    -webkit-transition: all .2s ease;
    -moz-transition: all .2s ease;
    -ms-transition: all .2s ease;
    -o-transition: all .2s ease;
    transition: all .2s ease;
}
.btn:hover {
    background: #d31d1c;
    background-image: -webkit-gradient(linear, 0 0, 0 100%, from(rgba(0, 0, 0, 0.05)), to(rgba(0, 0, 0, 0.05)));
    background-image: -moz-linear-gradient(top, rgba(0, 0, 0, 0.05), rgba(0, 0, 0, 0.05));
    background-image: -webkit-linear-gradient(top, rgba(0, 0, 0, 0.05), rgba(0, 0, 0, 0.05));
    background-image: -o-linear-gradient(top, rgba(0, 0, 0, 0.05), rgba(0, 0, 0, 0.05));
    background-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.05), rgba(0, 0, 0, 0.05));
    background-repeat: repeat-x;
}
.btn.small {
    font-size: 0.9em;
    line-height: 2.4;
    height: 35px;
    padding: 0 15px;
}
a.btn {
    color: #fff;
    text-decoration: none;
}
/*
 * Type Styles
 */
 .text-center {
    text-align: center;
}
.uppercase {
    text-transform: uppercase;
}
/* Grid
   ============================= */
 *, *:after, *:before {
    box-sizing: border-box;
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
}
.row {
    margin-left: -20px;
}
.row:after {
    clear: both;
    content:"";
    display: table;
}
/*
 * Grid Gutters
 */
[class*='col-'] {
    float: left;
    padding-left: 20px;
}
.row-pad {
    padding: 20px 0 20px 20px;
}
.row-pad[class*='col-']:last-of-type {
    padding-right: 20px;
}
/* 
 * Grid Columns
 */
 .col-1-3 {
    width: 300px;
}
/*
 * Button Hover
 */
 .row .col-1-3 img {
    display: block;
    width: 163px;
    height: 276px;
    margin: 0 auto 10px;
}
.row .col-1-3 a.btn.small {
    font-size: 0.75em;
    margin: -165px 0 0 -80px;
    opacity: 0;
    position: absolute;
}
.row .col-1-3 a.btn.small:hover {
    opacity: 1;
}

任何使用HTML，CSS或jQuery的解决方案都可以.我认为目前使用的HTML和CSS可能只有一个小问题，但我无法弄清楚.

Any solution with HTML, CSS, or jQuery is perfectly fine. I think there might just be a small issue with my HTML and CSS that I'm currently using, but I just can't figure it out.

推荐答案

为.btn添加宽度和高度，然后添加position:absolute;.左:50％;顶部:50%；最后一个边距:-50％.btn-height 0 0 -50％.btn-width

Add width and height to .btn, next add position:absolute; left:50%; top:50%; and the last - margin: -50% .btn-height 0 0 -50% .btn-width

类似的东西

.btn.small {
    width:140px;
    height:36px;
    margin:-18px 0 0 -70px;
    position:absolute;
    left:50%;
    top:50%;
}

还有一个小建议:在这种情况下，最好使用.col-1-3:hover .btn而不是.btn:hover

And one more small advice: instead of .btn:hover in this case better use .col-1-3:hover .btn

或将img和.btn包裹在另一个div中，例如.img-box，并设置规则.img-box:hover .btn

or wrap img and .btn in another div, for example .img-box, and set the rule .img-box:hover .btn

这篇关于在另一个div内水平和垂直居中放置div的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！