columns.forEach((item, index) => {
if (index === 0 ||
index === 2 ||
index === 4 ||
index === 6 ||
index === 8 ||
index === 10 ||
index === 12 ||
index === 14 ||
index === 16 ||
index === 18 ||
index === 20 ||
index === 22) {
item.classList.add('reverse');
}
});