.label_box {
            text-align: center;
            margin: 0 auto;
        }
.label_box>label {
	display:block;
	/*float:left;*/
	/*margin:0 10px 10px 0;*/
	position:relative;
	overflow:hidden;
   
}
.label_box>label>input {
	position:absolute;
	top:0;
	left:-20px;
}
.label_box>label>div {
	width:100px;
	text-align:center;
	border:#dddddd solid 1px;
	height:40px;
	line-height:40px;
	color:#fff;
	user-select:none;
	overflow:hidden;
	position:relative;
        display: inline-block;
}
.label_box>label>input:checked + div {
	border:#d51917 solid 1px;
	color:#d51917;
}
.label_box>label>input:checked + div:after {
	content:'';
	display:block;
	width:20px;
	height:20px;
	background-color:#d51917;
	transform:skewY(-45deg);
	position:absolute;
	bottom:-10px;
	right:0;
	z-index:1;
}
.label_box>label>input:checked + div:before {
	content:'';
	display:block;
	width:3px;
	height:8px;
	border-right:#ffffff solid 2px;
	border-bottom:#ffffff solid 2px;
	transform:rotate(35deg);
	position:absolute;
	bottom:2px;
	right:4px;
	z-index:2;
}





  /*<div class="label_box" style="text-align: left; ">
                             <label>
                               <%--   <asp:CheckBox ID="CheckBox1isfenzu" runat="server"  Text="是否分组"/>(如果该比赛阶段需要对球队分组请勾选此选项，比如小组赛)--%>
                                    <input id="CheckBox1isfenzu" type="checkbox" name="cbx_sel" runat="server"/>
                                 <div style="color: #000; ">是否分组</div>
                                 </label>
              
              

                             </div>*/