JSFiddle - React, Tailwind, and code Playground

by Anton Fedoryan

HTML

<div class="abc">

</div>

CSS

body {
  background-color: #0f0;
}

.abc {
  width: 200px;
  height: 50px;
  border: 5px solid #000;
  position: relative;
  /*transition: width 0 ease-in-out 2s;*/
}

.abc::before,
.abc::after {
  content: "";
  display: block;
  border: 5px solid #fff;
  position: absolute;
  transition-timing-function: ease-in-out;
  transition-duration: 1.5s;
}

.abc::before {
  left: -5px;
  top: 50%;
  right: -5px;
  bottom: -5px;
  border-top: none;
  border-right: none;
}

.abc::after {
  left: 50%;
  top: -5px;
  right: -5px;
  bottom: -5px;
  border-left: none;
  border-bottom: none;
}

.abc:hover {
    cursor: pointer;
}

.abc:hover::before {
  /*top: 100%;
  left: 100%;
  border-left: none;*/
  opacity: 0;
}

.abc:hover::after {
  /*left: 100%;
  bottom: 100%;*/
  opacity: 0;
}