.item-font{
	text-align:center;font-size: 18px;
}

.item-font-centen{
	height:35px;line-height:35px;
}

.problem-bg{
	background-color: #FFFFFF;
}

.picture-div{
	height:100vw;
	width: 60vw;
}

.picture-div-f{
	margin-top:5px ;
}

.picture-title{
	margin-top: 15px;
	margin-left: 15px;
	margin-right: 15px;
}

.picture-div img{width:100%;height:100%;}


.problem-a
{
    position: relative;
    display: block;
    /* overflow: hidden; */
    margin: -11px -15px;
    padding: inherit;
    /* white-space: nowrap; */
    /* text-overflow: ellipsis; */
    color: inherit;
  /*&:active {
      background-color: #eee;
  }*/
}