.content_div{overflow: hidden;width: 70%;margin: 30px auto;}
.content_div2{overflow: hidden;width: 1200px;margin: 30px auto;}
.table-center {margin: 0 auto;border: none;width: 80%;border-collapse: collapse;}
.table_txt{font-size:12px;}
.tabletd{width: 100px;height: 50px;}
.tabletd2{width: 170px;height: 50px;}
.tabletd3{height: 20px;}
.tabletd4{height: 50px;}
.table_tr{margin-top: 50px;}
.form-control{padding: .375rem .75rem;height:35px;font-size: 14px;width:80%;border:1px #ccc solid;}
.changmodify{color:#fff;background-color: #231f20;padding: 10px;width: 660px;font-size: 16px;text-align: center;}