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!!!
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