.btn-multiple-block {
    flex-wrap: wrap;
    row-gap: 1rem;
    gap: 1rem;
}

.btn-multiple-block .btn {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    flex: 0 1 auto;
}

.btn-multiple-block .btn {
    height: auto;
}

.btn-multiple-block.column-1 .btn {
    flex-basis: 100%;
}

.btn-multiple-block.column-2 .btn {
    flex-basis: calc(50% - 1rem);
}

.btn-multiple-block.column-3 .btn {
    flex-basis: calc(33% - 1rem);
}

.btn-multiple-block.column-4 .btn {
    flex-basis: calc(25% - 1rem);
}

.btn-multiple-block.column-5 .btn {
    flex-basis: calc(20% - 1rem);
}

.btn-multiple-block.column-6 .btn {
    flex-basis: calc(16% - 1rem);
}

@media screen and (max-width:425px) {
    .btn-multiple-block[class*="column-"] .btn {
        flex-basis: 100%;
    }
}