body {
  background-color: whitesmoke;
}
.body {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 100px;
}
.birthdayCard {
  border-radius: 30px;
  position: relative;
  width: 420px;
  height: 500px;
  transform-style: preserve-3d;
  cursor: pointer;
  transform: perspective(2000px);
  transition: 1s;
}
.cardFront {
  position: relative;
  background-color: #fef0f8;
  width: 420px;
  height: 500px;
  border-radius: 0 15px 15px 0;
  overflow: hidden;
  transform-origin: left;
  box-shadow: inset 100px 20px 100px rgba(118, 118, 118, 0.2),
    30px 0 50px rgba(118, 118, 118, 0.2);
  transition: 0.6s;
}
.bdHat {
  width: 200px;
  height: auto;
  top: -5%;
  left: 27%;
  transform: rotate(-5deg);
  position: absolute;
  z-index: 4;
}
.balloons {
  position: absolute;
  width: 270px;
  height: auto;
  right: -10px;
  top: 30px;
}
.jessImg {
  display: flex;
  justify-content: center;
  top: 150px;
  left: 50px;
  position: absolute;
  width: 260px;
  height: auto;
  z-index: 1;
}
.happy {
  text-align: center;
  left: 10%;
  top: 84%;
  font-size: 1.5em;
  font-family: Tahoma, sans-serif;
  color: hotpink;
  position: absolute;
  transition: 0.1s;
  z-index: 6;
}
.cardInside {
  position: absolute;
  background-color: #fef0f8;
  width: 420px;
  height: 500px;
  z-index: -1;
  left: 0;
  border-radius: 0 15px 15px 0;
  top: 0;
  box-shadow: inset 100px 20px 100px rgba(191, 190, 190, 0.2);
}
p {
  line-height: 30px;
  margin: 15px 10px 10px 30px;
  color: #333;
}
.back {
  font-family: Tahoma, sans-serif;
  color: #333;
  text-align: center;
  margin: 30px;
}
.birthdayCard:hover {
  transform: perspective(2500px) rotate(5deg);
  box-shadow: inset 100px 20px 100px rgba(116, 115, 115, 0.5),
    0 10px 100px rgba(116, 115, 115, 0.5);
}
.birthdayCard:hover .cardFront {
  transform: rotateY(-160deg);
}
.birthdayCard:hover .happy {
  visibility: hidden;
}