.cssbuttons-io-button {
  color: white;
  font-family: inherit;
  font-size: 17px;
  font-weight: 500;
  letter-spacing: 0.05em;
  border: none;
  border-radius: 0.9em;
  padding: 0.35em 3.3em 0.35em 1.2em;
  display: inline-flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  height: 2.8em;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.3s ease;
}

.cssbuttons-io-button .icon {
  background: white;
  position: absolute;
  right: 0.3em;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 2.2em;
  width: 2.2em;
  border-radius: 0.7em;
  transition: width 0.3s ease, box-shadow 0.3s ease;
}

.cssbuttons-io-button:hover .icon {
  width: calc(100% - 0.6em);
}

.cssbuttons-io-button .icon span {
  display: inline-block;
  width: 0.6em;
  height: 0.6em;
  transform: rotate(45deg);
  transition: transform 0.3s ease;
}

.cssbuttons-io-button:hover .icon span {
  transform: rotate(45deg) translateX(0.1em);
}

.cssbuttons-io-button:active .icon {
  transform: scale(0.95);
}