* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  height: 100vh;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #003304;
}

h1 {
  font-family: 'Cinzel Decorative', serif;
  font-size: 2.5rem;
  font-weight: 900;
  color: #ffffff;
  z-index: 1;
  position: relative;
}

.wrapper {
  height: 200px;
  width: 300px;
  background-color: #dee7ba;
  position: relative;
  display: flex;
  justify-content: center;
  z-index: 0;
}

.flap {
  position: absolute;
  height: 100%;
  width: 100%;
  top: 0;
  left: 0;
  border-right: 150px solid transparent;
  border-bottom: 100px solid transparent;
  border-left: 150px solid transparent;
  transform-origin: top;
  transition: transform 0.25s linear;
}

/* Flap when closed */
.flap.one {
  border-top: 100px solid #3a0202;
  transform: rotateX(0deg);
  z-index: 3;
  transition-delay: 0.75s;
}

/* Flap when opened */
.flap.two {
  border-top: 100px solid #dee7ba;
  transform: rotateX(90deg);
  z-index: 1;
  transition-delay: 0.5s;
}

.envelope {
  position: absolute;
  height: 100%;
  width: 100%;
  top: 0;
  left: 0;
  border-top: 100px solid transparent;
  border-right: 150px solid #3a0202;
  border-bottom: 100px solid #5f0606;
  border-left: 150px solid #5f0606;
  z-index: 3;
}

/* Card inside envelope */
.card.one {
  position: absolute;
  top: 0;
  width: 80%;
  height: 80%;
  background-color: #dee7ba;
  border-radius: 15px;
  z-index: 2;
  transition: 0.75s;
}

/* Card being displayed in larger size */
.card.two {
  position: absolute;
  top: 0;
  width: 100%;
  height: 100%;
  border-radius: 15px;
  z-index: 5;
  opacity: 0;
  transition: 3s;
  z-index: 0;
}

/* Wrapper hover */
.wrapper:hover .flap.one {
  transform: rotateX(90deg);
  transition-delay: 0s;
}

.wrapper:hover .flap.two {
  transform: rotateX(180deg);
  transition-delay: 0.25s;
}

.wrapper:hover .card.one {
  transform: translateY(-200px);
  transition-delay: 1s;
  opacity: 1;
  animation: fadeIn 1s ease-in-out 2s forwards;
}

/* 2nd card (rendered preview) as overlay if needed */
/* .wrapper:hover .card.two {
  transform: translateY(-150px);
  transition-delay: 1s;
  opacity: 1;
  align-items: normal;
  z-index: 5;
} */

@keyframes fadeIn {
  to {
    opacity: 0;
  }
}