网页浏览器不兼容怎么解决

/* 重置浏览器样式 */
html{color:#666;background:#F4F4F4;}
body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,p,pre,code,form,fieldset,legend,input,button,textarea,blockquote{margin:0;padding:0;}
body,button,input,select,textarea{font-family:’Helvetica Neue’,Helvetica,Arial,Sans-serif;font-size: 14px;line-height:1.7;word-wrap: break-word;}
h1,h2,h3,h4,h5,h6{font-size:100%;font-weight:normal;}
em,i{font-style:normal;font-weight:normal;}
ul,ol{list-style:none;}
table{border-collapse:collapse;border:0;padding:0;margin:0;}
img{border: 0;vertical-align: middle;}
a img{border-width:0;vertical-align:middle;}
a{cursor:pointer}a:link{color:#666;text-decoration:none;}a:visited{color:#666;text-decoration:none;}a:hover{color:#568ABE;text-decoration:underline;}a:active{color:#568ABE;text-decoration:none;}
.cGray{color:#333;}.cCcc{color:#ccc;}.f14px{font-size:14px;}.cRed{color: #c33;}
.mb5{margin-bottom: 5px;}.mb10{margin-bottom: 10px;}.mb15{margin-bottom: 15px;}.mb20{margin-bottom: 20px;}
.mt5{margin-top: 5px;}.mt10{margin-top: 10px;}.mt15{margin-bottom: 15px;}.mt20{margin-top: 20px;}.mt30{margin-top: 30px;}
.mr5{margin-right: 5px;}.mr10{margin-right: 10px;}.mr15{margin-right: 15px;}.mr20{margin-right: 20px;}
.mlr5{margin:0 5px;}
pre {background-color: #F1EDED; padding: 5px; border: 1px solid #FF9;}