Animated Expanding Button

In this article we will create an animated Expanding Button using HTML, CSS, and JS.

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HTML

First, start with the HTML

<div class="main-container">
  <div class="btn-container">
    <div class="expandable-button">
      <div class="fill-block"></div>
      <div class="close-icon">
        <div class="fas fa-times"></div>
      </div>
      <a class="expansion-item" href="https://twitter.com/unreal_ak">
        <div class="expansion-content">
          <div class="icon fab fa-twitter"></div>
          <div class="text">Twitter</div>
        </div></a
      ><a class="expansion-item" href="https://codepen.io/abh1nash">
        <div class="expansion-content">
          <div class="icon fab fa-codepen"></div>
          <div class="text">Codepen</div>
        </div></a
      ><a class="expansion-item" href="https://abhinash.net">
        <div class="expansion-content">
          <div class="icon fas fa-globe"></div>
          <div class="text">Website</div>
        </div></a
      >
    </div>
  </div>
</div>

CSS

Next, write the CSS

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  overflow: hidden;
  font-family: "Roboto Condensed", sans-serif;
}

.main-container {
  height: 100vh;
  background: #fee715;
  display: flex;
  align-items: center;
  justify-content: center;
}

.expandable-button {
  position: relative;
  width: 8em;
  height: 8em;
  border: 1px solid #101820;
  border-radius: 50%;
  background: #101820;
  transition: 0.15s ease-out;
  cursor: pointer;
  box-shadow: 0 10px 50px 5px #10182022;
}
.expandable-button .fill-block {
  position: absolute;
  height: 100%;
  width: 100%;
  z-index: 1;
}
.expandable-button .close-icon {
  position: relative;
  height: 100%;
  width: 100%;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  font-size: 2em;
}
.expandable-button .close-icon .fas {
  position: absolute;
  top: 100%;
  transition: 0.15s;
}
.expandable-button:hover {
  box-shadow: 0 15px 100px 10px #10182022;
}
.expandable-button .expansion-item {
  position: absolute;
  top: 50%;
  left: 50%;
  height: 1em;
  width: 1em;
  background: #fff;
  border-radius: 50%;
  pointer-events: none;
  text-decoration: none;
  color: #101820;
  transition: 0.25s;
  box-shadow: 0 5px 80px 5px #10182044;
}
.expandable-button .expansion-item .expansion-content {
  display: none;
  transition: 0.15s;
  animation: fadeOut 0.5s linear forwards;
}
.expandable-button .expansion-item:nth-of-type(1) {
  transform: translateX(calc(-60% + -25px)) translateY(-50%);
}
.expandable-button .expansion-item:nth-of-type(2) {
  transform: translateX(calc(-57% + 0px)) translateY(-50%);
}
.expandable-button .expansion-item:nth-of-type(3) {
  transform: translateX(calc(-54% + 25px)) translateY(-50%);
}
.expandable-button.expanded {
  width: 5em;
  height: 5em;
}
.expandable-button.expanded:hover {
  box-shadow: 0 10px 50px 5px #10182022;
}
.expandable-button.expanded .close-icon .fas {
  top: 50%;
  transform: translateY(-50%);
  transition-delay: 0.25s;
}
.expandable-button.expanded .expansion-item {
  width: 7em;
  height: 2em;
  border-radius: 5em;
  top: -50%;
  pointer-events: fill;
  transform: translateX(-0.7em);
}
.expandable-button.expanded .expansion-item:hover {
  top: -60%;
}
.expandable-button.expanded .expansion-item .expansion-content {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  line-height: 1;
  text-transform: uppercase;
  opacity: 0;
  animation: fadeIn 0.25s linear forwards;
}
.expandable-button.expanded .expansion-item:nth-of-type(1) {
  left: calc(-7.5em - -5%);
  transition-delay: 0.05s;
}
.expandable-button.expanded .expansion-item:nth-of-type(1) .expansion-content {
  animation-delay: 0.1s;
}
.expandable-button.expanded .expansion-item:nth-of-type(2) {
  left: calc(0em - 0%);
  transition-delay: 0.1s;
}
.expandable-button.expanded .expansion-item:nth-of-type(2) .expansion-content {
  animation-delay: 0.2s;
}
.expandable-button.expanded .expansion-item:nth-of-type(3) {
  left: calc(7.5em - 5%);
  transition-delay: 0.15s;
}
.expandable-button.expanded .expansion-item:nth-of-type(3) .expansion-content {
  animation-delay: 0.3s;
}

@keyframes fadeIn {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}
@keyframes fadeOut {
  0% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}

JS

Now, It’s Javascript time

const select = (s) => document.querySelector(s);

const btn = select(".expandable-button");

btn.addEventListener("click", () => {
  btn.classList.toggle("expanded");
});

That’s it.

Output

Here is the final output

See the Pen Expanding Button by Abhinash (@abh1nash) on CodePen.

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