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<div class="container">
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean dictum arcu sed erat fringilla placerat. Proin fringilla lacinia risus sed porttitor. Quisque tincidunt lectus vitae massa vulputate pellentesque et vitae ligula. Sed eu leo odio. Aliquam erat volutpat. Praesent cursus quam purus, sed scelerisque orci tincidunt in. Donec a neque facilisis, lobortis tellus vitae, dictum nisl. Morbi sed lacus dui. Sed eu leo imperdiet, pulvinar massa ut, ullamcorper magna.
Cras tempus, sapien eu rutrum dictum, nisi neque congue sapien, eu aliquet neque felis molestie urna. Suspendisse ut egestas purus, id commodo dolor. Praesent vel magna ut augue tristique iaculis. Aenean a turpis dui. Pellentesque at ullamcorper magna. Aenean accumsan enim quis est ultricies tristique. Donec hendrerit lorem luctus sollicitudin sodales. Proin lacinia magna a venenatis blandit. Vestibulum ac odio ac tortor laoreet tempus. Maecenas eget suscipit est, eget condimentum lectus. Nam convallis maximus mauris mattis bibendum. Pellentesque at velit vestibulum, egestas lectus iaculis, molestie lorem. Morbi aliquet enim velit, ut vulputate lacus suscipit a.
Quisque efficitur nisl vitae libero euismod, at imperdiet mi gravida. Quisque dui nisi, accumsan in finibus at, gravida a eros. In sit amet libero vitae lectus molestie sollicitudin non sed lectus. Nulla volutpat, elit et lacinia venenatis, lacus leo maximus ex, a pharetra orci enim fermentum ex. Curabitur sit amet pulvinar dolor. In ac justo sollicitudin, pulvinar leo vitae, ullamcorper massa. Pellentesque feugiat accumsan scelerisque. Nunc nec ex non massa hendrerit consectetur ac et dolor. Orci varius natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus.
Suspendisse quis gravida erat, sed ullamcorper purus. Maecenas consequat faucibus nisl, ac tempor lacus. Maecenas ullamcorper pharetra rhoncus. Sed nec auctor ligula. Nunc commodo augue ligula, non interdum lectus laoreet ac. Proin fermentum imperdiet interdum. Pellentesque id dapibus enim, ullamcorper lacinia purus. Praesent imperdiet vestibulum enim sed vulputate. Donec pulvinar leo sed mauris lobortis mattis.
Curabitur faucibus sit amet diam id posuere. Nunc mollis nunc vel est pharetra facilisis. Suspendisse neque augue, sodales non suscipit nec, egestas sed erat. Ut eu mattis turpis. Aenean porta dui vitae velit suscipit eleifend. Integer ac arcu quis nulla faucibus rutrum id quis lacus. Donec tempus nisi et tortor cursus accumsan. Aliquam molestie eget libero a laoreet. Integer in condimentum urna. Nam eu egestas eros. Praesent posuere, ipsum eget suscipit efficitur, mi felis aliquet eros, in aliquet nibh enim mattis massa.
</div>
.container {
height: 400px;
width: 400px;
border: 1px solid #eee;
padding: 5px;
overflow-y: auto;
}
new SimpleBar(document.querySelector('div'));
Also see: Tab Triggers