.btn-area{
  margin:5px
}
page{background-color:#edf0f3;}
.nav{width:100%;height:auto;display:flex;flex-direction:row;}
.default{text-align:center;flex:1;border-right:1px solid gainsboro;color:#000;font-weight:bold;font-size:28rpx;}
.red{text-align:center;color:#fc5558;flex:1;border-right:1px solid gainsboro;font-weight:bold;font-size:28rpx;}
.show{display:block;text-align:left;}
.hidden{display:none;text-align:left;}