.ck {
    --ck-style-panel-columns: 1;
    --ck-style-panel-button-height: 100px;
    --ck-style-panel-button-width: 240px
}

@media screen and (min-width: 640px) {
    .ck {
        --ck-style-panel-columns: 2
    }
}

@media screen and (min-width: 1280px) {
    .ck {
        --ck-style-panel-columns: 3;
        --ck-style-panel-button-height: 120px;
        --ck-style-panel-button-width: 300px
    }
}