/* ------------ Bakgrunn------------ */   
body {
  margin: 0;
  padding: 0;
  background-color: #000;
}
 /* ------------ size --------------- */   
.block {
     position:absolute;
	left: 0.63em!important;
     top: -18.1em!important;
  margin: 300px auto 0;
  width: 300px;
  height: 300px;
   /* ------------ Bakgrunn------------ */   
  background: linear-gradient(0deg, #000, #272727);
}
 /* ------------ farger border--------------- */   
.block:before,
.block:after {
  content: "";
  position: absolute;
  left: -2px;
  top: -2px;    

  background: linear-gradient(
    45deg,
    #00f991,
    #47d3a9,
    #278ddb,
    #47d3a9,
    #32e586,
    #278ddb,
    #47d3a9,
    #1d7ee5
  );
  /* ------------ animation  bg size--------------- */
  background-size: 400%;
  width: calc(100% + 4px);
  height: calc(100% + 4px);
  z-index: -1;
  animation: steam 18s linear infinite;
}

@keyframes steam {
  0% {
    background-position: 0 0;
  }
  50% {
    background-position: 400% 0;
  }
  100% {
    background-position: 0 0;
  }
}

.block:after {
  filter: blur(50px);
}