次の2つのソリューションから選択できます。
マークアップ:
<div id="content">
<div class="a"><div class="b">
<img src="http://placekitten.com/100/100">
</div></div>
<div class="a"><div class="b">
<img src="http://placekitten.com/2000/100">
</div></div>
一般的なCSS:
#content {
width: 300px;
margin: 0 auto;
border: 1px solid blue;
}
.a {
/* extend image area */
margin-left :-9999px;
margin-right:-9999px;
/* but without scrollbars */
position: relative;
left: -9999px;
}
.a .b {
/* undo scrollbar-removing positioning */
position: relative;
left: 9999px;
}
display: table
方法:
http://jsfiddle.net/ZhEku/3/
.a .b {
display: table; /* shrink-wrap to content (= the image) */
width: 300px; /* content width, acts as min-width when display:table */
margin: 0 auto; /* center inside the (2*9999+300)px area */
}
display: inline-block
方法:
http://jsfiddle.net/ZhEku/4/
.a {
/* center content (= the image wrapped into .b) */
text-align: center;
}
.a .b {
display: inline-block; /* shrink-wrap to content (= the image) */
min-width: 300px; /* content width */
text-align: left; /* if image is smaller than the content */
}
お楽しみください:)