body {
  background-color: #333;
  color: #fff;
  font-family: "Roboto", "Open Sans", "Lucida Grande", sans-serif;
}

.box {
  margin-top: auto;
  margin-bottom: auto;
  margin-left: auto;
  margin-right: auto;
  padding: 40px;
  width: 50%;
}

.row {
  display: flex;
  flex-wrap: nowrap;
}

circle {
  fill: red;
}

.main {
  background-color: #333;
}

#background-video {
  width: 100vw;
  height: 100vh;
  object-fit: cover;
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  z-index: -1;
  opacity: 5%;
}