.contain { 
            display: flex;
            justify-content: center;
            align-items: center;
            column-gap: 4vw;
            padding: 2vw 0;
            
        }
       
        .tit {
            color: #2c2c6c;
            font-size: 24px;
            font-weight: bold;
            margin-top: 20px;
        }
        .sub {
            color: #2c2c6c;
            font-size: 18px;
            margin-top: 10px;
        }
        .li {
            color: #2c2c6c;
            font-size: 14px;
            margin-top: 10px;
        }
        .chec {
            color: green;
            font-size: 18px;
        }
        .iao{

            width: 20%;
        }