<div class="videoBackground">
    <video preload="auto" playsinline autoplay loop muted>
    <source src="https://dl.dropboxusercontent.com/s/svb6t3bxnwsqvx3/Sweet_Home_mini.mp4?dl=0" type="video/mp4">
    </video>
</div>

<script>
$(document).ready(function() {
  var width = $(window).width();
  var height = $(window).height();
  $(".videoBackground")
    .width(width)
    .height(height);
});

$(window).resize(t_throttle(function() {
  var width = $(window).width();
  var height = $(window).height();
  $(".videoBackground")
    .width(width)
    .height(height);
}));
</script>

<style>
.videoBackground > video {
  object-fit: cover;
  background-size: cover;
  width: 100%;
  height: 100%
}
</style>