.top-des {
    display: flex;
    flex-direction: column;
    flex: 1 0 auto;
    box-sizing: border-box;
    /*padding: 2rem;*/
    width: 100%;
    max-width: 570px;   /* limit width */
    margin: 0 auto;     /* center horizontally */
    position: relative;
    transition: .15s ease-out;
    border-radius: 6px;
    /*border: 1px solid #D1D3DA;*/
    /*background: #fff;*/
}