/* - - - - - - - - - 各浏览器样式默认值标准化  - - - - - - - - -*/
html,body,span,object,iframe,h1,h2,h3,h4,h5,p,blockquote,pre,
a,address,code,
del,em,img,dl,dt,dd,ol,ul,li,
fieldset,form,label{
margin:0;padding:0;border:0;
font-style:inherit;font-family:inherit;vertical-align:baseline;}
article,aside,details,figcaption,figure,footer,header,hgroup,menu,nav,section,summary,time,mark,audio,video{margin:0;padding:0;display: block;}
img{border:none;vertical-align:middle;}
button{cursor:pointer;}
html{-webkit-text-size-adjust:none;}
body{min-width:300px;max-width:750px;margin:0 auto;font-size:62.5%;font-family:Arial,'Microsoft YaHei', Helvetica, sans-serif;background-color:#fff;}
ul,ol{list-style-type:none;}
h1{font-size:3.6em;}
h2{font-size:2.8em;}
h3,h4{font-size:2.4em;}
h5{font-size:2.0em;}
em,address{font-style:normal;}
a{text-decoration:none;color:#4f4f4f;}
/*链接样式*/
a:link{}	
a:hover{}	/*鼠标悬停时*/
a:active{transition:color 200ms linear 0s,background-color 200ms linear 0s,border-color 200ms linear 0s;color:#f00000;outline:none;}
a:visited{}/* 访问过 */
.clear{ display:block;height:0; line-height:0;overflow:hidden; clear:both;font-size:0;}/*清除浮动*/
input,select,textarea,button{vertical-align:middle;margin:0;padding:0;outline:none;box-sizing:border-box;font-family:'Microsoft YaHei';}
input::-webkit-input-placeholder,textarea::-webkit-input-placeholder,input:-moz-placeholder,textarea:-moz-placeholder,input::-moz-placeholder,textarea::-moz-placeholder,input:-ms-input-placeholder,textarea:-ms-input-placeholder{ color: #b0b0b0; }
@media screen and (max-width: 750px){body{font-size:62.500000%;}}
@media screen and (max-width: 740px){body{font-size:61.666667%;}}
@media screen and (max-width: 730px){body{font-size:60.833333%;}}
@media screen and (max-width: 720px){body{font-size:60.000000%;}}
@media screen and (max-width: 710px){body{font-size:59.166667%;}}
@media screen and (max-width: 700px){body{font-size:58.333333%;}}
@media screen and (max-width: 690px){body{font-size:57.500000%;}}
@media screen and (max-width: 680px){body{font-size:56.666667%;}}
@media screen and (max-width: 670px){body{font-size:55.833333%;}}
@media screen and (max-width: 660px){body{font-size:55.000000%;}}
@media screen and (max-width: 650px){body{font-size:54.166667%;}}
@media screen and (max-width: 640px){body{font-size:53.333333%;}}
@media screen and (max-width: 630px){body{font-size:52.500000%;}}
@media screen and (max-width: 620px){body{font-size:51.666667%;}}
@media screen and (max-width: 610px){body{font-size:50.833333%;}}
@media screen and (max-width: 600px){body{font-size:50.000000%;}}
@media screen and (max-width: 590px){body{font-size:49.166667%;}}
@media screen and (max-width: 580px){body{font-size:48.333333%;}}
@media screen and (max-width: 570px){body{font-size:47.500000%;}}
@media screen and (max-width: 560px){body{font-size:46.666667%;}}
@media screen and (max-width: 550px){body{font-size:45.833333%;}}
@media screen and (max-width: 540px){body{font-size:45.000000%;}}
@media screen and (max-width: 530px){body{font-size:44.166667%;}}
@media screen and (max-width: 520px){body{font-size:43.333333%;}}
@media screen and (max-width: 510px){body{font-size:42.500000%;}}
@media screen and (max-width: 500px){body{font-size:41.666667%;}}
@media screen and (max-width: 490px){body{font-size:40.833333%;}}
@media screen and (max-width: 480px){body{font-size:40.000000%;}}
@media screen and (max-width: 470px){body{font-size:39.166667%;}}
@media screen and (max-width: 460px){body{font-size:38.333333%;}}
@media screen and (max-width: 450px){body{font-size:37.500000%;}}
@media screen and (max-width: 440px){body{font-size:36.666667%;}}
@media screen and (max-width: 430px){body{font-size:35.833333%;}}
@media screen and (max-width: 420px){body{font-size:35.000000%;}}
@media screen and (max-width: 410px){body{font-size:34.166667%;}}
@media screen and (max-width: 400px){body{font-size:33.333333%;}}
@media screen and (max-width: 390px){body{font-size:32.500000%;}}
@media screen and (max-width: 380px){body{font-size:31.666667%;}}
@media screen and (max-width: 370px){body{font-size:30.833333%;}}
@media screen and (max-width: 360px){body{font-size:30.000000%;}}
@media screen and (max-width: 350px){body{font-size:29.166667%;}}
@media screen and (max-width: 340px){body{font-size:28.333333%;}}
@media screen and (max-width: 330px){body{font-size:27.500000%;}}
@media screen and (max-width: 320px){body{font-size:26.666667%;}}
@media screen and (max-width: 310px){body{font-size:25.833333%;}}
@media screen and (max-width: 300px){body{font-size:25.000000%;}}