Question

对不起标题。不知道该说些什么。这里解释起来比较容易。

基本上我想要一个具有相对位置的标题，我稍后会将导航菜单放入其中。我希望它是100％宽（所以它覆盖整个页面）和大约130px高。我的问题是左边有一点空间，即使设置为100％宽。那么是html / body。在标题的右侧没有空格。我希望它能够居中。

这是我的代码：

html, body {
    font-family: Tahoma, Geneva, sans-serif;
    font-size: 12px; 
    -webkit-font-smoothing: antialiased; 
    font-smoothing: antialiased;
    height: 100%;
    width: 100%;
    overflow: hidden;
}
#header {       
    -webkit-box-shadow: 0px 0px 30px #7a7a7a; 
       -moz-box-shadow: 0px 0px 30px #7a7a7a; 
            box-shadow: 0px 0px 30px #7a7a7a;
    width: 100%;
    height: 130px;
    margin-right: auto;
    margin-left: auto;
    background-color: #fff;
    position: relative;
}

Answer 1

将margin元素的body设置为0。

Answer 2

基本上当你没有预先应用某些css规则时就会发生这种情况。为什么预定义因为某些浏览器呈现自己的样式，如margin应该是1px或者身体等等。所以你必须用你自己的css规则覆盖它。是的，是的， Levi Botelho为您提供了正确的答案。只要您在css的帮助下描述html内容，就必须遵守以下规则。

/**
 * 1.0 Reset
 *
 * Modified from Normalize.css to provide cross-browser consistency and a smart
 * default styling of HTML elements.
 *
 * @see http://git.io/normalize
 * ----------------------------------------------------------------------------
 */

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, font, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, i, center, dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, audio, canvas, details, figcaption,
figure, footer, header, hgroup, mark, menu, meter, nav,
output, progress, section, summary, time, video {
    margin: 0;
    padding: 0;
    border: 0;
    outline: 0;
    font-size: 100%;
    vertical-align: baseline;
    background: transparent;
}

body {
    line-height: 1;
}

article, aside, dialog, figure, footer, header, 
hgroup, nav, section, blockquote { 
    display: block;
}

nav ul {
    list-style: none;
}

ol {
    list-style: decimal;
}

ul {
    list-style: disc;
}

ul ul {
    list-style: circle;
}

blockquote, q {
    quotes: none;
}

blockquote:before, blockquote:after,
q:before, q:after {
    content: '';
    content: none;
}

ins {
    text-decoration: underline;
}

del {
    text-decoration: line-through;
}

mark {
    background: none;
}

abbr[title], dfn[title] {
    border-bottom:1px dotted #000;
    cursor:help;
}

/* tables still need 'cellspacing="0"' in the markup */
table {
    border-collapse: collapse;
    border-spacing: 0;
}

hr {
    display: block;
    height: 1px;
    border: 0;  
    border-top: 1px solid #ccc;
    margin: 1em 0;
    padding: 0;
}

input[type="submit"], input[type="button"], button {
    padding: 0 !important;
    margin: 0 !important;
}

input, select, a img {
    vertical-align: middle;
}



/*
--------------------------------------------------------------------
            End of reset css properties
--------------------------------------------------------------------
 */

希望得到答案！

宽度为100％的标题;没有采取行动

2 个答案: