html,body{
  margin: 0px;
  /* font-family: "Microsoft YaHei","微软雅黑","Helvetica Neue",Helvetica Neue,Helvetica,Hiragino Sans GB,tahoma,arial,sans-serif; */
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  color: #000;
}

*{
  box-sizing: border-box;
}

.top-container{
  background-color: #ffffff;
}

.img-cover{
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  /* background-color: #ececec; */
}

a{
  display: block;
  text-decoration: none;
}

.wktbox{
  display: -webkit-box;
}

.flex{
  -webkit-box-flex: 1;
}

.box-center-horizontal{
  display: -webkit-box;
  -webkit-box-align: center;
  -webkit-box-orient: horizontal;
}

.box-center-vertical{
  display: -webkit-box;
  -webkit-box-align: center;
  -webkit-box-orient: vertical;
}