.tanchuan_div_rongqi{ width: 600px; height: 340px;  }
.problem_id_lable{ float: left; margin-left: 12px; font-weight: bold; }
.problem_div{width: 580px; height: auto; min-height: 54px; margin-top: 20px; float: left;}
#problem_id{ float: right; width: 520px; height: auto; min-height: 54px;  color: rgba(255,13,38,0.66); font-size: 18px; }
#answer_list_li li{ width: 100%; float: left; list-style: none;}
#answer_list_li{ display: block; width: 450px; height: 100px; float: left; margin-left: 48px; margin-top: 30px;}
.btn_div_class{width: 580px; height: auto; float: left; text-align: center;}
#answer_confirm{ width: 200px; height: 30px; border-radius: 16px; background-color: rgba(0,255,80,0.66); color: white; font-size: 23px; line-height: 3px; border-color: white;}