css - overflow-hidden-parent 中的中心图像

Question

我在 span 标签内有一张图片，该 span 具有设置的宽度和高度，并设置为溢出隐藏。所以它只显示了图像的一小部分。这可行，但可见的图像的一小部分是左上角。我希望它成为可见图像的中心。我想我需要绝对定位图像，但图像的大小可能会有所不同。有谁知道如何做我想做的事？

谢谢!

这是 HTML:

<div class="lightbox_images">
                <h6>Alternate Views</h6>
                <span>
                    <a href="http://www.kranichs.com/mothers_rings/mothers_rings_txt2.jpg" rel="lightbox[product_alternate_views]" title="This is my captions 1">
                        <img src="http://www.kranichs.com/mothers_rings/mothers_rings_txt2.jpg" />
                    </a>
                </span>
                <span>
                    <a href="https://www.kranichs.com/product_images/Simon-G@346_M_346_M.jpg" rel="lightbox[product_alternate_views]" title="This is my captions 2">
                        <img src="https://www.kranichs.com/product_images/Simon-G@346_M_346_M.jpg" />
                    </a>
                </span>
                <span>
                    <a href="http://www.kranichs.com/images/simong/sim_banner_01.jpg" rel="lightbox[product_alternate_views]" title="This is my captions 3">
                        <img src="http://www.kranichs.com/images/simong/sim_banner_01.jpg" />
                    </a>
                </span>
                <span>
                    <a href="http://www.kranichs.com/images/psu/psu_banner.jpg" rel="lightbox[product_alternate_views]" title="This is my captions 4">
                        <img src="http://www.kranichs.com/images/psu/psu_banner.jpg" />
                    </a>
                </span>
            </div>

这是 CSS:

.lightbox_images{
    background-color:#F9F9F9;
    border:1px solid #F0F0F0;
}
.lightbox_images h6{
    font-family:Verdana, Arial, Helvetica, sans-serif;
    color:#333333;
    font-size:14px;
    font-weight:bold;
    font-style:italic;
    text-decoration:none;
    margin:0px;
}
.lightbox_images span{
    padding:5px;
    padding-bottom:15px;
    background-color:#DFDFDF;
    margin:5px;
    display:inline-block;
    border:1px solid #CCC;
}
.lightbox_images a{
    display:inline-block;
    width:60px;
    height:60px;
    overflow:hidden;
    position:relative;
}

.lightbox_images a img{
    position:absolute;
    left:-50%;
    top:-50%;
}

.lightbox_images span:hover{
    border:1px solid #BBB;
    background-color:#CFCFCF;
}

Answer 1

如 https://stackoverflow.com/a/14837947/2227298 中所提议通过 Billy Moat，有一个解决方案不知道图像的高度和宽度。

在这里试试:http://jsfiddle.net/LSKRy/

<div class="outer">
    <div class="inner">
    <img src="http://3.bp.blogspot.com/-zvTnqSbUAk8/Tm49IrDAVCI/AAAAAAAACv8/05Ood5LcjkE/s1600/Ferrari-458-Italia-Nighthawk-6.jpg" alt="" />
    </div>
</div>

.outer {
    width: 300px;
    overflow: hidden;
}

.inner {
    display: inline-block;
    position: relative;
    right: -50%;
}

img {
    position: relative;
    left: -50%;
}