为什么div和ul的宽度和高度与正常不同

时间:2012-12-07 02:13:47

标签: html css xhtml

这是我的代码:

CSS

div {
    height: 200px;
    width: 600px;
    border: 1px solid black;
}
ul {
    height: 200px;
    width: 600px;
    border: 1px solid black;
}
p {
    height: 200px;
    width: 600px;
    border: 1px solid black;
}

HTML

<div></div>
<ul>
    <li></li>
    <li></li>
    <li></li>
</ul>
<p></p>

我想问为什么宽度和高度与正常(段落和分割)不同,即使我设置的宽度和高度相同?

4 个答案:

答案 0 :(得分:1)

默认情况下,许多浏览器会在ul标记上放置内部填充。

你需要覆盖它:

<强> CSS

div {
    height: 200px;
    width: 600px;
    border: 1px solid black;
}
ul {
    height: 200px;
    width: 600px;
    border: 1px solid black;
    padding: 0px;
    margin: 0px;
}
p {
    height: 200px;
    width: 600px;
    border: 1px solid black;
    margin: 0px;
}​

<强> Demo

答案 1 :(得分:0)

您可能只需要重置css:

/**
 * Eric Meyer's Reset CSS v2.0 (http://meyerweb.com/eric/tools/css/reset/)
 * http://cssreset.com
 */
html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed, 
figure, figcaption, footer, header, hgroup, 
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
    margin: 0;
    padding: 0;
    border: 0;
    font-size: 100%;
    font: inherit;
    vertical-align: baseline;
}
/* HTML5 display-role reset for older browsers */
article, aside, details, figcaption, figure, 
footer, header, hgroup, menu, nav, section {
    display: block;
}
body {
    line-height: 1;
}
ol, ul {
    list-style: none;
}
blockquote, q {
    quotes: none;
}
blockquote:before, blockquote:after,
q:before, q:after {
    content: '';
    content: none;
}
table {
    border-collapse: collapse;
    border-spacing: 0;
}

或者现在你可以添加到你所有的css:

html, body, div, ul, li, p { margin:0; padding:0;}

答案 2 :(得分:0)

浏览器具有默认样式。在有序/无序列表的情况下,一些浏览器添加左边距而一些添加左边距

答案 3 :(得分:0)

请尝试

ul {
-webkit-padding-start: 0px;
padding-left: 0px;
}

您可以打开开发人员工具,查看浏览器定义的用户代理样式表,并覆盖您想要的任何内容。