*{
            margin: 0;
            padding: 0;
        }
        div{
            width: 300px;
            margin: 100px auto;
            position: relative;
            
        }
        form fieldset{
            padding: 10px;
            border: 1px dashed #666363
            
        }
        form fieldset legend{
           position: absolute;
           top: -8px;
           left: 20px;
          padding:0 5px;
          background:#fff;
        }