Кнопка вверх

by AJIEKCEU

HTML

<div class="main">
  <div class="topbutton js-scroll-top"></div>
</div>

CSS

body {
  background: #20262E;
  padding: 20px;
  font-family: Helvetica;
}
.main{
  height: 1200px;
}
.topbutton{
  position: fixed;
  left: 20x;
  bottom: 20px;
  width: 30px;
  height: 30px;
  background-color: #000;
  border-radius: 50%
}

JavaScript

$('.js-scroll-top').on('click',  function(e){
  e.preventDefault();
  $('body,html').animate({scrollTop: 0}, 1000);
});