html{
    height: 100%;
    box-sizing: border-box;
}
*{
    margin: 0;
    padding: 0;
    -webkit-box-sizing: border-box;
    box-sizing: border-box;
}
body{
    min-width: 320px;
    max-width: 750px;
    width: 10rem;
    margin: 0 auto;
    line-height: 1.5;
    font-family: Arial, Helvetica;
    background: #fff;
    padding-top: .8rem;
    height: 100%;
    box-sizing: border-box;
}
@media screen and (min-width: 750px){
    html{
        font-size: 75px!important;
    }
}

a:link{
    text-decoration:none;
     /* 指正常的未被访问过的链接*/
}
a:visited{
    text-decoration:none;
     /*指已经访问过的链接*/
}a:hover{
     text-decoration:none;
     color: #C81623;
     /*指鼠标在链接*/
}
a:active{
    text-decoration:none;
    /* 指正在点的链接*/
}
img{
    border: 0;
    display: block;
    width:100%;
    vertical-align: middle;
}
a, img {
        /*阻止长按页面，弹出菜单的方法。*/
        -webkit-touch-callout:none;
}
input,textarea{
    -webkit-appearance: none;
    outline: none;
    border: none;
}
.clearfix:after{
    content:"";
    display:block;
    clear:both;
}
li,ol{
    list-style:none;
} 
/*修改placeholder的字体颜色*/
input:-moz-placeholder { /* Mozilla Firefox 4 to 18 */ 
    color: #000;  
} 
input::-moz-placeholder { /* Mozilla Firefox 19+ */ 
    color: #000; 
} 
input:-ms-input-placeholder{ 
    color: #000; 
} 
input::-webkit-input-placeholder{ 
    color: #000; 
}
em{
    font-style: normal;
}
.hide{
    display: none;
}