JSFiddle - React, Tailwind, and code Playground
by khamer
HTML
<div class="arrow-down"></div>
CSS
body {
display: grid; justify-content: center; align-content: center; height: 100vh;
}
.arrow-down {
width: 4rem;
height: 9rem;
background: linear-gradient(45deg, transparent calc(50% - 1px), blue 50%, transparent calc(50% + 1px)) bottom left / 2rem 2rem no-repeat,
linear-gradient(-45deg, transparent calc(50% - 1px), blue 50%, transparent calc(50% + 1px)) bottom right / 2rem 2rem no-repeat,
linear-gradient(to right, transparent calc(50% - 1px), blue 50%, transparent calc(50% + 1px));
}