html{color:#000;background:#fff;}
body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,input,button,textarea,p,blockquote,th,td{margin:0;padding:0;}
body{font:12px/1 Tahoma,Helvetica,Arial,"\5b8b\4f53",sans-serif;}
img{border:none;}
em,strong{font-style:normal;font-weight:normal;}
li{list-style:none;}
table {border-collapse:collapse;border-spacing:0;}
h1{font-size:18px;}
h2{font-size:16px;}
h3{font-size:14px;}
h4, h5, h6{font-size:100%;}
q:before,q:after{content:'';}/* 消除q前后的内容 */
button,input,select,textarea{font-size:100%;}/* 使得表单元素在 ie 下能继承字体大小 */
input,button,textarea,select,optgroup,option{font-family:PingFangSC-Medium;font-size:inherit;font-style:inherit;font-weight:inherit;}
address,cite,dfn,em,var{font-style:normal;} /* 将斜体扶正 */
/* link */
a{text-decoration:none;color: white;}
a:hover{text-decoration:none;}
*{
    font-family: PingFangSC-Medium;
    padding: 0;
    margin: 0;
}
button{
    outline: none; 
}
@font-face {
    font-family: 'pingFangSC-Medium';
    src: url('./pingfang.ttf');
    font-weight: normal;
    font-style: normal;
  }
  .top{
      width: 46px;
      height: 46px;
      position: fixed;
      right: 20px;
      bottom: 50px;
      z-index: 1000;
      
  }
  .top img{
    width: 100%;
    height: 100%;
  }
  .top:hover{
    cursor: pointer;
  }