header {
  height: 100vh;
  overflow: hidden;
  position: relative;
}

header video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.main_title {
  font-size: 64px;
  font-weight: 700;
  line-height: 66px;
  color: #fff;
  width: 860px;
  text-align: center;
  margin: auto;
}

.header_caption {
  position: absolute;
  top: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #00000042;
}