CSS base style reset, browser style unification and IE style optimization

/*Styling Reset*/Body,dl,dd,h1,h2,h3,h4,h5,h6,p,form{margin:0;} Ul,ol{margin:0;padding:0;} H1,h2,h3,h4,h5,h6{font-weight:400;} Input:focus,button:focus{outline:none;}a:focus{Outline:none;}/*base Style*/Body{font-family: "Microsoft yahei"; color: #000; font-size:12px;background: #fff;}/*the scroll bar occupies space under IE*/body,html{-ms-overflow-Style:scrollbar;}/*placeholder colors under different browsers*/::-webkit-input-placeholder {color: #999!important;}/*WebKit Browsers*/:-moz-placeholder {color: #999!important;}/*Mozilla Firefox 4 to*/::-moz-placeholder {color: #999!important;}/*Mozilla Firefox 19+*/:-ms-input-placeholder {color: #999!important;}/*Internet Explorer + +*//*Remove IE under input box x button, view password eye button*/::-ms-clear,::-ms-Reveal{display:none;}/*Remove Browser input number small arrow*/Input[type=number]{-moz-Appearance:textfield;} Input[type=number]::-webkit-inner-spin-button, Input[type=number]::-webkit-outer-spin-button{-webkit-appearance:none; margin:0;}

CSS base style reset, browser style unification and IE style optimization