body {
  background-image: url(joker.jpg);
  background-size: 100%;
}
body {margin: 0;padding: 0;font-family: sans-serif;background-color: #262626;}
.btnflip-item {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  text-align: center;
  line-height: 60px;
  font-size: 24px;
  background-color: rgba(255,255,255, .05);
  transform-style: preserve-3d;
  backface-visibility: hidden;
  border-radius: 30px;
  text-transform: uppercase;
  color: #fff;
  transition: 0.25s;
}




.btnflip1 {
  position: fixed;
  top: 10%;
  left: 12.5%;
  transform: translate(-50%, -50%);
  width: 200px;
  height: 60px;
  text-align: center;
  transform-style: preserve-3d;
  perspective: 1000px;
  transform-origin: center center;
}
.btnflip-item.btnflip__front1 {
  transform: rotateX(0deg) translateZ(20px);
}
.btnflip1:hover .btnflip-item.btnflip__front1 {
  transform: rotateX(-180deg) translateZ(20px);
}
.btnflip-item.btnflip__back1 {
  transform: rotateX(180deg) translateZ(20px);
}
.btnflip1:hover .btnflip-item.btnflip__back1 {
  transform: rotateX(0deg) translateZ(20px);
}
.btnflip-item.btnflip__center1 {
  background: linear-gradient(to left, #13f213, #7129bd);
}
.btnflip-item.btnflip__center1::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to left, #ffdd1f, #c31a5b);
  border-radius: 30px;
  transform: translateZ(-1px);
}
.btnflip1:hover .btnflip-item.btnflip__center1 {
  transform: rotateX(-180deg);
}





.btnflip {
  position: absolute;
  top: 10%;
  left: 87.5%;
  transform: translate(-50%, -50%);
  width: 200px;
  height: 60px;
  text-align: center;
  transform-style: preserve-3d;
  perspective: 1000px;
  transform-origin: center center;
}
.btnflip-item.btnflip__front {
  transform: rotateX(0deg) translateZ(20px);
}
.btnflip:hover .btnflip-item.btnflip__front {
  transform: rotateX(-180deg) translateZ(20px);
}
.btnflip-item.btnflip__back {
  transform: rotateX(180deg) translateZ(20px);
}
.btnflip:hover .btnflip-item.btnflip__back {
  transform: rotateX(0deg) translateZ(20px);
}
.btnflip-item.btnflip__center {
  background: linear-gradient(to left, #13f213, #7129bd);
}
.btnflip-item.btnflip__center::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to left, #ffdd1f, #c31a5b);
  border-radius: 30px;
  transform: translateZ(-1px);
}
.btnflip:hover .btnflip-item.btnflip__center {
  transform: rotateX(-180deg);
}