50px;
        }

        .flex-tb > section {
            display: flex;
            flex-flow: column;
            flex: 0 0 240px;
            align-items: center;
            padding-bottom: 50px;
        }

        .flex-tb > section > header {
            height: 30px;
            outline: none;
        }

        .flex-tb i {
            font-size: 40px;
            line-height: 1;
            display: block;
        }

        .flex-tb div:hover {
            position: absolute