;
        }
        .flex-tb div:hover {
            background: #fff;
            border: 1px solid #ddd;
            top: 20px;
            z-index: 99;
        }

        .flex-tb div:hover > i {
            font-size: 200px;
            transition: font-size 0.1s;
        }
        body{
            background: #ddd;
        }
        td { padding: 5px 10px; }
        input { border: 0; outline: 0; width: 150px; text-align: center; background: transparent; }
        section { position: