SCROLL TO SECTION VANILLA

```js
function scrollIt(element) {window.scrollTo({'behavior': 'smooth','left': 0,'top': element.offsetTop});}
var btns = document.querySelectorAll('.js-btn');
var sections = document.querySelectorAll('.js-section');
btns[0].addEventListener('click', function () {scrollIt(sections[0]);});
btns[1].addEventListener('click', function () {scrollIt(sections[1]);});
```

```html
<div class="btns">
<button class="btn js-btn">Section 1</button>
<button class="btn js-btn">Section 2</button>
</div>

<div class="section js-section">scroll-behavior: smooth - Section 1</div>
<div class="section js-section">scroll-behavior: smooth - Section 2</div>
```