JSFiddle - React, Tailwind, and code Playground

HTML

<a class="home-btn-left" onclick="plusDivs(-1)">❮</a>

CSS

.home-btn-left {
    position: fixed;
    left: 20px;
    top: 20px;
    background-color: transparent;
    width: 100%;
    height: 100%;
    cursor: pointer;
}