我对一行包含三个单元格的表格有疑问。其中两个(左和右)具有固定的宽度/高度，应该显示图像(或者在没有图像时缩小到 0)。中间的单元格占用表格固定总数的剩余空间。
问题:现在我最终得到 3px 的额外空间，“图像容器”似乎通过这些空间扩展(在单元格下方)。例如，您可以通过检查 'starredunread' 元素看到它，它的高度从 20px 增长到 23px。而且我不知道发生了什么，因为默认情况下边距/填充已经关闭并且 border:0 和 border-collapse: collapse 没有帮助。
这是 CSS 文件:
/*------------------------------------------
Reset (from the Yahoo UI Library)
------------------------------------------*/
body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,form,fieldset,input,textarea,p,blockquote,th,td {margin:0;padding:0;}
table{border-collapse:collapse;}
fieldset,img{border:0;}
address,caption,cite,code,dfn,em,strong,th,var{font-style:normal;font-weight:normal;}
ol,ul{list-style:none;}
caption,th{text-align:left;}
h1,h2,h3,h4,h5,h6{font-size:100%;font-weight:normal;}
q:before,q:after{content:'';}
abbr,acronym{border:0}
a{outline: none;}
/*------------------------------------------
Interface
------------------------------------------*/
body {
top: 0px;
left: 0px;
width: 320px;
height: 480px;
background-color: #f00;
color: #000;
font-family: helvetica, arial, sans-serif;
font-size: 12px;
}
.header {
display: table;
top: 0px;
left: 0px;
width: 320px;
height: 44px;
background-color: #738ba3;
color: #fff;
table-layout: fixed;
border: 0;
border-spacing: 0;
}
.headerrow {
display: table-row;
}
.text {
display: table-cell;
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
padding-left: 2px;
vertical-align: middle;
}
.text b {
font-weight: 700;
font-size: 11pt;
}
.date {
display: table-cell;
width: 50px;
vertical-align: middle;
text-align: right;
font-size: 8pt;
padding-top: 3px;
padding-right: 5px;
}
.date b {
font-weight: 700;
line-height: 11pt;
}
.starredunread {
display: table-cell;
top: 0px;
left: 0px;
width: 20px;
height: 44px;
vertical-align: middle;
}
.icon {
display: table-cell;
top: 0px;
right: 0px;
width: 44px;
height: 44px;
}
.content {
display: table;
width: 320px;
background-color: #fff;
color: #000;
font-size: 12pt;
text-align: left;
padding: 15px;
}
.sectionheader {
height: 20px;
}
.sectionheaderrow {
}
.sectionunread {
height: 20px;
}
.sectiontext {
font-weight: 700;
font-size: 9pt;
padding-top: 1px;
}
.smallicon {
width: 20px;
height: 20px;
}
这是 HTML 代码:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="Content-type" content="text/html; charset=utf-8" />
<title>testHTML</title>
<link rel="stylesheet" href="test.css" type="text/css" media="screen" />
</head>
<body>
<div class="header">
<div class="headerrow">
<div class="starredunread">
<img src="images/testimg_small.png">
</div><!-- end starredunread -->
<div class="text">
<b>Testheader</b><br>
Text for testing - this should overflow with an ellipsis if the text exceeds the size of the container...
</div><!-- end text -->
<div class="date">
<b>11.11.09</b><br>
18:54
</div><!-- end date -->
<div class="icon">
<img src="images/testimg_44x44.png">
</div><!-- end icon -->
</div><!-- end headerrow -->
</div> <!-- end header -->
<div class="content">
More text for testing purposes.<br><br>Not really relevant.<br><br> So don't waste your time reading this. :o)
</div><!-- end content -->
<div class="header sectionheader">
<div class="headerrow sectionheaderrow">
<div class="starredunread sectionunread">
<img src="images/testheader.png">
</div><!-- end sectionunread -->
<div class="text sectiontext">
Another Header
</div><!-- end sectiontext" -->
<div class="icon smallicon">
<img src="images/testimg_20x20.png">
</div><!-- end smallicon -->
</div><!-- end sectionheaderrow -->
</div><!-- end sectionheader -->
</body>
</html>
...没有图像看起来不太好，但无论如何它证明了我的问题。
知道我做错了什么吗？非常感谢您的投入!代码只需要在 Safari/Webkit 中工作。
最佳答案
在严格模式下，图像默认是内联的，因为您使用的是严格模式，所以您需要通过对图像应用 display:block 来手动修复此问题。
"In the early days, experiments with strict mode invariably raised the comment that images suddenly got an odd bottom margin that couldn’t be removed. The cause was that in strict mode is an inline element, which means that some space should be reserved for possible descender characters like g, j, or q. Of course an image doesn’t have descender characters, so the space was never used, but it still had to be reserved.
The solution was to explicitly declare images block level elements: img {display: block}."
关于html - 在 Safari 中每个 DIV 表格元素获得不需要的 1px 额外高度，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/1717175/