/* body {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  height: 90%;
}

body:before {
  content: "";
  position: absolute;
  background: url("../images/back.jpg");
  background-size: cover;
  z-index: -1;
  /* Keep the background behind the content */
/* height: 22%;
  width: 20%; */
/* Using Glen Maddern's trick /via @mente */

/* don't forget to use the prefixes you need */
/* transform: scale(5);
  transform-origin: top left;
  filter: blur(2px);
} */

body {
  /*background-color: black;  use it if you don't want the background border*/
  /* top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  height: 100%; */
}
body:before {
  content: "";
  position: fixed;
  width: 100vw;
  height: 100vh;
  left: 0em;
  top: 0em;
  background-image: url("../images/back.jpg");
  background-position: center center;
  background-repeat: no-repeat;
  background-position: 50% 50%;
  background-size: cover;
  filter: blur(0px);
  z-index: -1;
}