body {
  position: relative;
  display: flex;
  flex-direction: column;
}

.main_container_index {
  position: relative;
  width: 100%;
  margin-bottom: var(--footer-height);
  min-height: 100vh;
  z-index: 1;
}

iframe {
  width: 100%;
  height: var(--iframe-height, 100vh);
  overflow: hidden;
  display: block;
  border: none;
}