var blocks = document.querySelectorAll('.questions__item');
var buli = document.querySelectorAll('.buli');
[].forEach.call(blocks, function(item) {
buli.addEventListener('click', function() {
if (item.classList.contains('questions__item')) {
item.classList.add('reds')
item.classList.remove('questions__item')
} else {
item.classList.add('questions__item');
item.classList.remove('reds')
}
});
});