.simpleBanner.deco::before{
content:'';
  width: 500px;
  height: 880px;
  position: absolute;
  z-index: -1;
  background: #ffffff;
  /* background: linear-gradient(120deg, rgba(113, 0, 151, 1) 40%, rgba(170, 61, 220, 1) 40%, rgba(146, 29, 193, 1) 50%, rgba(113, 0, 151, 1) 80%); */
  background: linear-gradient(0deg, rgba(173, 72, 221, 1) 0%, rgba(255, 255, 255, 0) 100%);
    top: -470px;
    left: -180px;
    transform: rotate(398deg);
}

/* Mobile */ 
@media (max-width: 769px) {
    .simpleBanner.deco::before{
       left: -335px;
    }
}