CSS Reset,意为重置默认样式。HTML中绝大部分标签元素在网页显示中都有一个默认属性值,通常为了避免重复定义元素样式,需要进行重置默认样式(CSS Reset)。举几个例子:
1.淘宝(CSS Reset):
html { overflow-x: auto; overflow-y: scroll; } body, dl, dt, dd, ul, ol, li, pre, form, fieldset, input, p, blockquote, th, td { font-weight: 400; margin: 0; padding: 0; } h1, h2, h3, h4, h4, h5 { margin: 0; padding: 0; } body { background-color: #FFFFFF; color: #666666; font-family: Helvetica,Arial,sans-serif; font-size: 12px; padding: 0 10px; text-align: left; } select { font-size: 12px; } table { border-collapse: collapse; } fieldset, img { border: 0 none; } fieldset { margin: 0; padding: 0; } fieldset p { margin: 0; padding: 0 0 0 8px; } legend { display: none; } address, caption, em, strong, th, i { font-style: normal; font-weight: 400; } table caption { margin-left: -1px; } hr { border-bottom: 1px solid #FFFFFF; border-top: 1px solid #E4E4E4; border-width: 1px 0; clear: both; height: 2px; margin: 5px 0; overflow: hidden; } ol, ul { list-style-image: none; list-style-position: outside; list-style-type: none; } caption, th { text-align: left; } q:before, q:after, blockquote:before, blockquote:after { content: ””; }html { overflow-x: auto; overflow-y: scroll; } body, dl, dt, dd, ul, ol, li, pre, form, fieldset, input, p, blockquote, th, td { font-weight: 400; margin: 0; padding: 0; } h1, h2, h3, h4, h4, h5 { margin: 0; padding: 0; } body { background-color: #FFFFFF; color: #666666; font-family: Helvetica,Arial,sans-serif; font-size: 12px; padding: 0 10px; text-align: left; } select { font-size: 12px; } table { border-collapse: collapse; } fieldset, img { border: 0 none; } fieldset { margin: 0; padding: 0; } fieldset p { margin: 0; padding: 0 0 0 8px; } legend { display: none; } address, caption, em, strong, th, i { font-style: normal; font-weight: 400; } table caption { margin-left: -1px; } hr { border-bottom: 1px solid #FFFFFF; border-top: 1px solid #E4E4E4; border-width: 1px 0; clear: both; height: 2px; margin: 5px 0; overflow: hidden; } ol, ul { list-style-image: none; list-style-position: outside; list-style-type: none; } caption, th { text-align: left; } q:before, q:after, blockquote:before, blockquote:after { content: ””; }
2.百度(CSS Reset):
body { font-family: arial,helvetica,sans-serif; font-size: 13px; font-size-adjust: none; font-stretch: normal; font-style: normal; font-variant: normal; font-weight: normal; line-height: 1.4; text-align: center; } body, ul, ol, dl, dd, h1, h2, h3, h4, h5, h6, p, form, fieldset, legend, input, textarea, select, button, th, td { margin: 0; padding: 0; } h1, h2, h3, h4, h5, h6 { font-size: 100%; font-weight: normal; } table { font-size: inherit; } input, select { font-family: arial,helvetica,clean,sans-serif; font-size: 100%; font-size-adjust: none; font-stretch: normal; font-style: normal; font-variant: normal; font-weight: normal; line-height: normal; } button { overflow: visible; } th, em, strong, b, address, cite { font-style: normal; font-weight: normal; } li { list-style-image: none; list-style-position: outside; list-style-type: none; } img, fieldset { border: 0 none; } ins { text-decoration: none; }
3.《超越css》(CSS Reset):
/* Normalizes margin,padding */ body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,form,fieldset,input,p,blockquote,th,td { margin: 0; padding: 0 } /* Normalizes font-size for headers */ h1,h2,h3,h4,h5,h6 { font-size: 100% } /* Removes list-style from lists */ ol,ul { list-style: none } /* Normalizes font-size and font-weight to normal */ address,caption,cite,code,dfn,em,strong,th,var { font-size: normal; font-weight: normal } /* Removes list-style from lists */ table { border-collapse: collapse; border-spacing: 0 } /* Removes border from fieldset and img */ fieldset,img { border: 0 } /* Left-aligns text in caption and th */ caption,th { text-align: left } /* Removes quotation marks from q */ q:before,q:after { content: ” } 4.Eric Meyer(CSS Reset)——推荐: 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, u, i, center, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td { margin: 0; padding: 0; border: 0; outline: 0; font-size: 100%; vertical-align: baseline; background: transparent; } body { line-height: 1; } ol, ul { list-style: none; } blockquote, q { quotes: none; } blockquote:before, blockquote:after, q:before, q:after { content: ”; content: none; } /* remember to define focus styles! */ :focus { outline: 0; } /* remember to highlight inserts somehow! */ ins { text-decoration: none; } del { text-decoration: line-through; } /* tables still need ‘cellspacing=”0″‘ in the markup */ table { border-collapse: collapse; border-spacing: 0; }
5.YUI(CSS Reset):
body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,form,fieldset,input,textarea,p,blockquote,th,td { margin: 0; padding: 0; } table { border-collapse: collapse; border-spacing: 0; } fieldset,img { border: 0; } address,caption,cite,code,dfn,em,strong,th,var { font-style: normal; font-weight: normal; } ol,ul { list-style: none; } caption,th { text-align: left; } h1,h2,h3,h4,h5,h6 { font-size: 100%; font-weight: normal; } q:before,q:after { content: ”; } abbr,acronym { border: 0; }
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