header {
  position: absolute;
  top: 0;
  height: 100%;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 2;
  padding: 1em;
  box-sizing: border-box;
  left: 0;
}

.schild {
  height: auto;
  width: 100%;
}

@media (min-width: 1024px) {
  .schild {
    width: 50%;
  }
}

.bottom_l img {
  bottom: 0px;
  left: 0px;
  height: 100%;
  z-index: 1;
}

.bottom_r img {
  bottom: 0px;
  right: 0px;
  height: 100%;
  z-index: 1;
}