/*  Wave

      <div class="sk-wave">
        <div class="sk-wave-rect"></div>
        <div class="sk-wave-rect"></div>
        <div class="sk-wave-rect"></div>
        <div class="sk-wave-rect"></div>
        <div class="sk-wave-rect"></div>
      </div>
 */
.ajax-throbber.sk-wave {
  display: flex;
  justify-content: space-between;
  width: var(--sk-size);
  height: var(--sk-size);
}

.ajax-throbber .sk-wave-rect {
  width: 15%;
  height: 100%;
  animation: sk-wave 1.2s infinite ease-in-out;
  background-color: var(--sk-color);
}

.ajax-throbber .sk-wave-rect:nth-child(1) {
  animation-delay: -1.2s;
}
.ajax-throbber .sk-wave-rect:nth-child(2) {
  animation-delay: -1.1s;
}
.ajax-throbber .sk-wave-rect:nth-child(3) {
  animation-delay: -1s;
}
.ajax-throbber .sk-wave-rect:nth-child(4) {
  animation-delay: -0.9s;
}
.ajax-throbber .sk-wave-rect:nth-child(5) {
  animation-delay: -0.8s;
}

@keyframes sk-wave {
  0%,
  40%,
  100% {
    transform: scaleY(0.4);
  }
  20% {
    transform: scaleY(1);
  }
}