我有一个关于将元素水平和垂直居中于另一个div内的问题。
我正在为客户工作的网站,这是给我带来麻烦的页面:http://staging.slackrmedia.com/halfpast/brand_collection_bremont.html
因此,当您将鼠标悬停在图片上时,会看到一个显示“查看收藏集”的链接。我使用CSS3过渡和不透明度来设计这个样式,但是我遇到了一个问题:我需要这个“View Collection”链接来水平和垂直居中于它所在的div内部。
以下是我的代码jsFiddle的链接: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;
}
使用HTML,CSS或jQuery的任何解决方案都非常好。我认为我目前正在使用的HTML和CSS可能只是一个小问题,但我无法弄明白。
答案 0 :(得分:1)
将宽度和高度添加到.btn,然后添加位置:绝对;左:50%;顶部:50%;和最后一个 - 保证金:-50%.btn-height 0 0 -50%.btn-width
像这样的东西
.btn.small {
width:140px;
height:36px;
margin:-18px 0 0 -70px;
position:absolute;
left:50%;
top:50%;
}
还有一个小建议: 而不是.btn:在这种情况下悬停更好用.col-1-3:hover .btn
或将img和.btn包装在另一个div中,例如.img-box,并设置规则.img-box:hover .btn
答案 1 :(得分:1)
使用jquery 你可以test at jsFiddle 根据您的偏好调整保证金
$(".col-1-3 img").hover(function(){
var $viewCollection = $(this).next();
$viewCollection.attr("id","selectedVC");
$viewCollection.css({"margin-top": "-165px","margin-left": "68px"});
$viewCollection.show();
});
$(".col-1-3 img").mouseleave(function(){
var $viewCollection = $(this).next();
if(idIsHovered("selectedVC") == false){
$viewCollection.removeAttr("id");
$viewCollection.hide();
}
});
function idIsHovered(id){
return $("#" + id + ":hover").length > 0;
}
$(function(){
$(".btn.small").hide();
});
确保你的页面有jQuery引用
<script src="http://code.jquery.com/jquery-1.10.1.min.js"></script>