.cd-panel {
  /*...*/
  visibility: hidden;
  transition: visibility 0s 0.6s;
}

.cd-panel.cd-panel--is-visible {
  visibility: visible;
  transition: visibility 0s 0s;
}

.cd-panel__header {
  /*...*/
  position: fixed;
  top: 0;
  width: 90%;
  height: 50px;
  transition: transform 0.3s 0s;
  transform: translateY(-50px);
}

.cd-panel--from-right .cd-panel__header {
  right: 0;
}

.cd-panel--from-left .cd-panel__header {
  left: 0;
}

.cd-panel--is-visible .cd-panel__header {
  transition: transform 0.3s 0.3s;
  transform: translateY(0px);
}

.cd-panel__container {
  /*...*/
  position: fixed;
  width: 90%;
  height: 100%;
  top: 0;
  transition: transform 0.3s 0.3s;
}

.cd-panel--from-right .cd-panel__container {
  right: 0;
  transform: translate3d(100%, 0, 0);
}

.cd-panel--from-left .cd-panel__container {
  left: 0;
  transform: translate3d(-100%, 0, 0);
}

.cd-panel--is-visible .cd-panel__container {
  transform: translate3d(0, 0, 0);
  transition-delay: 0s;
}