HTMLify

const button = document.querySelector('.apps__button');
const dropdown = document.querySelector('.dropdown__wrapper');

button.addEventListener('click', () => {
    dropdown.classList.remove('none');
    dropdown.classList.toggle('hide');
});

document.addEventListener("click", (event) => {
    const isClickInsideDropdown = dropdown.contains(event.target);
    const isButtonClicked = button.contains(event.target);
    if (!isClickInsideDropdown && !isButtonClicked) {
        dropdown.classList.add('hide');
        dropdown.classList.add('dropdown__wrapper--fade-in');
    }
});