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导读网页的本质就是超级文本标记语言,通过结合使用其他的Web技术(如:脚本语言、公共网关接口、组件等),可以创造出功能强大的网页。因而,超级文本标记语言是万维网(Web)编程的基础,也就是说万维网是建立... 网页的本质就是超级文本标记语言,通过结合使用其他的Web技术(如:脚本语言、公共网关接口、组件等),可以创造出功能强大的网页。因而,超级文本标记语言是万维网(Web)编程的基础,也就是说万维网是建立在超文本基础之上的。超级文本标记语言之所以称为超文本标记语言,是因为文本中包含了所谓“超级链接”点。 CSS中overflow属性是经常可以用到的属性,接下来的这篇文章我们就来看看CSS中overflow属性的具体用法。
我们首先来看一下overflow属性的值有哪些? overflow 属性规定当内容溢出元素框时发生的事情。 overflow有以下四个属性值 visible:初始值,内容不会被修剪,会呈现在元素框之外。 scroll:内容会被修剪,但是浏览器会显示滚动条以便查看其余的内容。 hidden:内容会被修剪,并且其余内容是不可见的。 auto:如果内容被修剪,则浏览器会显示滚动条以便查看其余的内容。 下面我们来详细说一说overflow属性的这四个值 我们来看具体的示例 代码如下 HTML代码 <!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS overflow</title>
<link rel="stylesheet" type="text/css" href="sample.css">
</head>
<body>
<div class="hid">
<p>
The European languages are members of the same family. Their separate existence is a myth. For science, music, sport, etc, Europe uses the same vocabulary. The languages only differ in their grammar, their pronunciation and their most common words. Everyone realizes why a new common language would be desirable: one could refuse to pay expensive translators.
</p>
</div>
<br>
<div class="scr">
<p>
The European languages are members of the same family. Their separate existence is a myth. For science, music, sport, etc, Europe uses the same vocabulary. The languages only differ in their grammar, their pronunciation and their most common words. Everyone realizes why a new common language would be desirable: one could refuse to pay expensive translators.
</p>
</div>
<br>
<div class="vis">
<p>
The European languages are members of the same family. Their separate existence is a myth. For science, music, sport, etc, Europe uses the same vocabulary. The languages only differ in their grammar, their pronunciation and their most common words. Everyone realizes why a new common language would be desirable: one could refuse to pay expensive translators.
</p>
</div>
</body>
</html>CSS代码 /*hidden*/
div.hid{
width: 200px;
height: 100px;
overflow: hidden;
background-color: #FF9999;
}
/*scroll*/
div.scr{
width: 200px;
height: 100px;
overflow: scroll;
background-color: #99FF99;
}
/*visible*/
div.vis{
width: 200px;
height: 100px;
overflow: visible;
background-color: #9999FF;
}在浏览器上显示如下结果 当overflow的属性值是hidden时,效果如下
在hidden的情况下,不会显示出剩下的部分,也不能滚动显示剩下的内容。 当overflow的属性值是scroll时,效果如下
在scroll的情况下,没有显示的内容可以滚动。默认的情况下,文字在横向上会折回,垂直方向显示滚动栏。 在css中设置white-space : nowrap(不自动改行的意思),也可以向横向滚动。 CSS代码 div.scr{
width: 200px;
height: 100px;
white-space:nowrap;
overflow: scroll;
background-color: #99FF99;
}效果如下
此外,也可以使用overflow-x和overflow-y属性对垂直和横向的滚动条的显示进行更为细致的设置。 当overflow的属性值是visible时,效果如下
visible的情况下,从盒子中溢出显示。紫色的部分是div盒子。默认的情况下,文字在div的横向width中被折回,并在纵向方向上显示。 这个也和scroll属性值一样,在css中设置white-space : nowrap,也可以横向滚动。 另外,如果不设置盒子的高度,就会自动改变盒子的高度。 div.vis{
width: 200px;
/* height: 100px; */
overflow: visible;
background-color: #9999FF;
}效果如下
最后,我们来看看当overflow属性值是auto时的具体情况 HTML代码 <!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS overflow</title>
<link rel="stylesheet" type="text/css" href="sample.css">
</head>
<body>
<div class="aut">
<p>
The European languages are members of the same family. Their separate existence is a myth. For science, music, sport, etc, Europe uses the same vocabulary. The languages only differ in their grammar, their pronunciation and their most common words. Everyone realizes why a new common language would be desirable: one could refuse to pay expensive translators.
</p>
</div>
</body>
</html>CSS代码 div.aut{
width: 200px;
height: 100px;
overflow: auto;
background-color: red;
}在浏览器上运行的效果和scroll相似
以上就是CSS中overflow属性怎么使用的详细内容,更多请关注php中文网其它相关文章! 网站建设是一个广义的术语,涵盖了许多不同的技能和学科中所使用的生产和维护的网站。 |
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