.videoBackground {
    height: 100%;
    position: relative;
}

.videoBackground video {
    position: absolute;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

@media (max-width: 750px) {
   .videoBackground {
      display: none;
   } 
   body {
      background: url("https://sunvipeel.s3.ap-south-1.amazonaws.com/cover_aisha.jpg") no-repeat;
      background-size: cover;
   }
}