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reset.css浏览器默认样式表重置(user agent stylesheet)的示例代码

作者:绝世唐门三哥

这篇文章主要介绍了reset.css浏览器默认样式表重置(user agent stylesheet),本文通过示例代码给大家介绍的非常详细,对大家的学习或工作具有一定的参考借鉴价值,需要的朋友可以参考下

当你在浏览器控制台查看对应元素的样式的时候,会发现一些样式标有(user agent stylesheet),同时不能修改,那就表明该样式是浏览器自身对元素的设置样式,即浏览器默认样式表;

当然不同浏览器之间的默认样式会有出入,同时相同浏览器的不同版本之间也会有细微差别!!!

这里附上PC和APP端的相应reset.css样式表

reset.css  (PC端重置样式)

@charset "utf-8";
/* CSS Document */
* { color:#444; }
body { font:12px/1.5 "微软雅黑",Arial,Tahoma, Helvetica,\5b8b\4f53, sans-serif; }
html,body,div,h1,h2,h3,h4,h5,h6,hr,p,blockquote,dl,dt,dd,ul,ol,li,pre,form,fieldset,object,code,em,span,var,legend,button,input,textarea,th,td,a,img,header,footer,nav,aside,audio,datalist,section { margin:0;padding:0;border:0;outline:0; }/*清除内外边距*/
h1,h2,h3,h4,h5,h6 { font-weight:normal;font-size:100%; }/*设置默认字体*/
:focus { outline:0; }
ul,ol,ul li,ol li { list-style: none; }/*重置列表*/
address,caption,cite,em,code,dfn,th,var { font-style:normal;font-weight:normal; }
form label { cursor:pointer; }
input,button,select,textarea { font-family:inherit;font-size:100%;outline:none; }
textarea { resize:none }
input { vertical-align:middle; }
img { border:0; }/*重置图片元素*/
table { border-collapse:collapse;border-spacing: 0; }/*重置表格*/
.l { float:left; }
.r { float:right; }
button,input[type="reset"],input[type="button"],input[type="submit"] { line-height:normal !important; }
a { text-decoration:none;}
a { color:#666;}
a:hover { text-decoration:underline; }
input { _filter:chroma(color=#000000); }
/*--清除浮动
------------------------------------------------------------------------------------------*/
.clearfix:after { clear:both;content:".";display:block;font-size:0;height:0;visibility:hidden; }
.clearfix:after { _zoom:1; }
.overflow { overflow:hidden; _zoom:1; }
.clear { clear:both; height:0;font-size:0; overflow:hidden; }

 normalize.css 

Normalize.css 使浏览器呈现所有 HTML 元素更加一致,并且符合现代 web 标准。
Normalize.css 只作用于需要规范化的样式。
/*! normalize.css v8.0.1 | MIT License | github.com/necolas/normalize.css */
/* Document
   ========================================================================== */
/**
 * 1. Correct the line height in all browsers.
 * 2. Prevent adjustments of font size after orientation changes in iOS.
 */
html {
  line-height: 1.15; /* 1 */
  -webkit-text-size-adjust: 100%; /* 2 */
}
/* Sections
   ========================================================================== */
/**
 * Remove the margin in all browsers.
 */
body {
  margin: 0;
}
/**
 * Render the `main` element consistently in IE.
 */
main {
  display: block;
}
/**
 * Correct the font size and margin on `h1` elements within `section` and
 * `article` contexts in Chrome, Firefox, and Safari.
 */
h1 {
  font-size: 2em;
  margin: 0.67em 0;
}
/* Grouping content
   ========================================================================== */
/**
 * 1. Add the correct box sizing in Firefox.
 * 2. Show the overflow in Edge and IE.
 */
hr {
  box-sizing: content-box; /* 1 */
  height: 0; /* 1 */
  overflow: visible; /* 2 */
}
/**
 * 1. Correct the inheritance and scaling of font size in all browsers.
 * 2. Correct the odd `em` font sizing in all browsers.
 */
pre {
  font-family: monospace, monospace; /* 1 */
  font-size: 1em; /* 2 */
}
/* Text-level semantics
   ========================================================================== */
/**
 * Remove the gray background on active links in IE 10.
 */
a {
  background-color: transparent;
}
/**
 * 1. Remove the bottom border in Chrome 57-
 * 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
 */
abbr[title] {
  border-bottom: none; /* 1 */
  text-decoration: underline; /* 2 */
  text-decoration: underline dotted; /* 2 */
}
/**
 * Add the correct font weight in Chrome, Edge, and Safari.
 */
b,
strong {
  font-weight: bolder;
}
/**
 * 1. Correct the inheritance and scaling of font size in all browsers.
 * 2. Correct the odd `em` font sizing in all browsers.
 */
code,
kbd,
samp {
  font-family: monospace, monospace; /* 1 */
  font-size: 1em; /* 2 */
}
/**
 * Add the correct font size in all browsers.
 */
small {
  font-size: 80%;
}
/**
 * Prevent `sub` and `sup` elements from affecting the line height in
 * all browsers.
 */
sub,
sup {
  font-size: 75%;
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}
sub {
  bottom: -0.25em;
}
sup {
  top: -0.5em;
}
/* Embedded content
   ========================================================================== */
/**
 * Remove the border on images inside links in IE 10.
 */
img {
  border-style: none;
}
/* Forms
   ========================================================================== */
/**
 * 1. Change the font styles in all browsers.
 * 2. Remove the margin in Firefox and Safari.
 */
button,
input,
optgroup,
select,
textarea {
  font-family: inherit; /* 1 */
  font-size: 100%; /* 1 */
  line-height: 1.15; /* 1 */
  margin: 0; /* 2 */
}
/**
 * Show the overflow in IE.
 * 1. Show the overflow in Edge.
 */
button,
input { /* 1 */
  overflow: visible;
}
/**
 * Remove the inheritance of text transform in Edge, Firefox, and IE.
 * 1. Remove the inheritance of text transform in Firefox.
 */
button,
select { /* 1 */
  text-transform: none;
}
/**
 * Correct the inability to style clickable types in iOS and Safari.
 */
button,
[type="button"],
[type="reset"],
[type="submit"] {
  -webkit-appearance: button;
}
/**
 * Remove the inner border and padding in Firefox.
 */
button::-moz-focus-inner,
[type="button"]::-moz-focus-inner,
[type="reset"]::-moz-focus-inner,
[type="submit"]::-moz-focus-inner {
  border-style: none;
  padding: 0;
}
/**
 * Restore the focus styles unset by the previous rule.
 */
button:-moz-focusring,
[type="button"]:-moz-focusring,
[type="reset"]:-moz-focusring,
[type="submit"]:-moz-focusring {
  outline: 1px dotted ButtonText;
}
/**
 * Correct the padding in Firefox.
 */
fieldset {
  padding: 0.35em 0.75em 0.625em;
}
/**
 * 1. Correct the text wrapping in Edge and IE.
 * 2. Correct the color inheritance from `fieldset` elements in IE.
 * 3. Remove the padding so developers are not caught out when they zero out
 *    `fieldset` elements in all browsers.
 */
legend {
  box-sizing: border-box; /* 1 */
  color: inherit; /* 2 */
  display: table; /* 1 */
  max-width: 100%; /* 1 */
  padding: 0; /* 3 */
  white-space: normal; /* 1 */
}
/**
 * Add the correct vertical alignment in Chrome, Firefox, and Opera.
 */
progress {
  vertical-align: baseline;
}
/**
 * Remove the default vertical scrollbar in IE 10+.
 */
textarea {
  overflow: auto;
}
/**
 * 1. Add the correct box sizing in IE 10.
 * 2. Remove the padding in IE 10.
 */
[type="checkbox"],
[type="radio"] {
  box-sizing: border-box; /* 1 */
  padding: 0; /* 2 */
}
/**
 * Correct the cursor style of increment and decrement buttons in Chrome.
 */
[type="number"]::-webkit-inner-spin-button,
[type="number"]::-webkit-outer-spin-button {
  height: auto;
}
/**
 * 1. Correct the odd appearance in Chrome and Safari.
 * 2. Correct the outline style in Safari.
 */
[type="search"] {
  -webkit-appearance: textfield; /* 1 */
  outline-offset: -2px; /* 2 */
}
/**
 * Remove the inner padding in Chrome and Safari on macOS.
 */
[type="search"]::-webkit-search-decoration {
  -webkit-appearance: none;
}
/**
 * 1. Correct the inability to style clickable types in iOS and Safari.
 * 2. Change font properties to `inherit` in Safari.
 */
::-webkit-file-upload-button {
  -webkit-appearance: button; /* 1 */
  font: inherit; /* 2 */
}
/* Interactive
   ========================================================================== */
/*
 * Add the correct display in Edge, IE 10+, and Firefox.
 */
details {
  display: block;
}
/*
 * Add the correct display in all browsers.
 */
summary {
  display: list-item;
}
/* Misc
   ========================================================================== */
/**
 * Add the correct display in IE 10+.
 */
template {
  display: none;
}
/**
 * Add the correct display in IE 10.
 */
[hidden] {
  display: none;
}

APP端初始化样式表

@charset "utf-8";
/* @group Public */
body,div,ul,ol,dl,li,dt,dd,h1,h2,h3,h4,p,form,iframe,input,textarea,a,span,em,strong,img,html,nav,header,article,button,footer,var {padding:0;margin:0;}
body { font:12px/1.2rem "Microsoft YaHei",tahoma,arial,sans-serif;min-width:320px;position:relative; }
form,input {background:none;border:none;}
ul,dl,ol {list-style-type:none;}
h1, h2, h3, h4, h5 { font:12px/1.2rem "Microsoft YaHei",arial,tahoma; }
a { text-decoration:none; }
a:hover,a:focus { outline:none; }
table { border-collapse:collapse;border-spacing:0; }
img { border:none; }
strong,b { font-weight:normal; }
em,i,var { font-style:normal; }
p { text-indent:0; }
.clear { clear:both;height:0;line-height:0;overflow:hidden;width:0; }
.clearfix:after { clear:both;content:".";display:block;font-size:0;height:0;visibility:hidden; }

一般推荐使用normalize.css,不会初始化掉基础的元素样式!!! 

到此这篇关于reset.css浏览器默认样式表重置(user agent stylesheet)的文章就介绍到这了,更多相关reset.css重置浏览器样式表内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家!

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