How To Create Border Animation Using CSS

Prince Dhameliya Aug 1, 2022 0 358

In this topic,

We are going to see how to create border animation using CSS.

Actually, there are two borrowed pseudo-elements. Only the two pseudo-elements upper, left, and right borders are fixed, hover, and the height and width of the two pseudo-elements can be altered when passing. Very simple to comprehend.

First of all, create Html in the index.html file.

<div class="border-radius">

</div>

And I have add SCSS in <style>…</style> tag on index.html file.

html, body {
  width: 100%;
  height: 100%;
  display: flex;
}
:root {
  --borderColor: #03A9F3;
}
div {
  position: relative;
  width: 140px;
  height: 64px;
  margin: auto;
  border: 1px solid #03A9F3;
  cursor: pointer;
}
div::before, div::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  transition: 0.3s ease-in-out;
}
div::before {
  top: -5px;
  left: -5px;
  border-top: 1px solid var(--borderColor);
  border-left: 1px solid var(--borderColor);
}
div::after {
  right: -5px;
  bottom: -5px;
  border-bottom: 1px solid var(--borderColor);
  border-right: 1px solid var(--borderColor);
}
div:hover::before, div:hover::after {
  width: calc(100% + 9px);
  height: calc(100% + 9px);
}