.reveal:not(.has-vertical-slides) .controls .navigate-left,
.reveal[data-navigation-mode="linear"].has-horizontal-slides .navigate-left {
  bottom: 44.4em !important;
  right: 186.5em !important;
}
.reveal:not(.has-vertical-slides) .controls .navigate-right,
.reveal[data-navigation-mode="linear"].has-horizontal-slides .navigate-right {
  bottom: 46.4em !important;
}
.reveal .controls .controls-arrow:after,
.reveal .controls .controls-arrow:before {
  width: 8em;
}
.reveal .controls .controls-arrow {
  width: 4.6em !important;
}
.menu {
  width: 85px;
  height: 85px;
  position: absolute;
  background-color: brown;
}
.slide-menu-button {
  display: none;
}
.start {
  width: 600px;
  height: 245px;
  position: absolute;
  left: 45px;
}
.psa {
  /* background-color: aqua; */
  top: -15px;
}
.pso {
  /* background-color: blueviolet; */
  top: 230px;
}
.ad {
  /* background-color: blue; */
  top: 468px;
}
.section {
  position: relative;
}
.psa-pic {
  position: absolute;
  animation: pulse-zoomout 1.5s linear 0s infinite normal none;
}
.ad-pic {
  position: absolute;
  left: 18px;
  animation: pulse-zoomout 1.5s linear 0s infinite normal none;
}

@keyframes pulse-zoomout {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
  100% {
    transform: scale(1);
  }
}