body {
  background-color: rgb(216, 216, 216);
  background-image: url("../image/email-pattern.png")
}

.center-konten {
  max-width:421px; 
  max-height:100%; 
  width: 100%;
  height: 100%;
  margin-top:20vh; 
  margin-top: calc(var(--vh, 1vh) * 15);
}