.grad {
  background-image: linear-gradient(to right, #7B1FA2 , #9C27B0);
}

img {
  padding: 0;
  display: block;
  margin: 0 auto;
  height: 10vw;
  max-height: 100%;
  max-width: 100%;
}

.center {
  margin: 0;
  position: absolute;
  top: 50%;
  left: 50%;
  -ms-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
}