.container_404 {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  text-align: center;
  font-family: 'Ubuntu', sans-serif;
  justify-content: center;
}
.container_404 .img-404 {
  width: 100%;
  height: 60vh;
}