.age-level-reading-grid {
    display: grid;
    grid-template-columns: auto auto;
    grid-gap: 20px;
    margin-bottom: 20px;
}


/* --------- iphone portrait -----------  */
@media only screen and (max-device-width: 540px) {
    .age-level-reading-grid {
        grid-template-columns: auto;
    }    
}