3.（个人）清空外边距、内边距网址

清空外边距、内边距网址：https://yuilibrary.com/yui/docs/cssreset/

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清空外边距、内边距网址：http://yui.yahooapis.com/3.18.1/build/cssreset/cssreset-min.css

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格式：

html{color:#000;background:#FFF}

body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,code,form,fieldset,legend,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;font-variant:normal}

sup{vertical-align:text-top}

sub{vertical-align:text-bottom}

input,textarea,select{font-family:inherit;font-size:inherit;font-weight:inherit;*font-size:100%}

legend{color:#000}

#yui3-css-stamp.cssreset{display:none}