.background{
  background-image: linear-gradient(white, rgb(233, 233, 233), rgb(221, 221, 221), rgb(201, 201, 201));
}
.kartu{
  width: 40%;
  border: 3px solid rgba(0, 0, 0, 0.1);
  border-radius: 20px;
  box-shadow: rgba(17, 17, 26, 0.1) 0px 4px 16px, rgba(17, 17, 26, 0.1) 0px 8px 24px, rgba(17, 17, 26, 0.1) 0px 16px 56px;
}