.room-number 
{
    display: grid;
    grid-template-columns: 100px 1fr; 
    gap: 10px;
    width: 100%;
}
@media only screen and (max-width: 608px) {
    .room-number 
    {
        /* display: grid;*/
        grid-template-columns: 1fr; 
        /*gap: 5px;*/
    }
}