@import url("https://fonts.googleapis.com/css?family=Montserrat:400,400i,700");
body {
  background-color: #121212;
}

.container {
  display: flex;
  justify-content: center;
  align-items: center;
}
.container .title {
  -webkit-transform-origin: center center;
          transform-origin: center center;
  color: #eee;
  text-shadow: 2px 2px 1px rgba(0, 212, 255, 0.5);
  font-family: Montserrat, sans-serif;
  font-size: 5rem;
  font-weight: bold;
  margin: 0 3rem;
  -webkit-animation-name: bounce;
          animation-name: bounce;
  -webkit-animation-timing-function: linear;
          animation-timing-function: linear;
  -webkit-animation-duration: 10s;
          animation-duration: 10s;
  -webkit-animation-iteration-count: infinite;
          animation-iteration-count: infinite;
}
.container .button-container {
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: 20rem;
  height: 100vh;
  -webkit-perspective: 30rem;
          perspective: 30rem;
}
.container .button-container button {
  height: 5rem;
  margin: .15rem;
  transition: all 1s;
  font-family: Montserrat, sans-serif;
  font-size: 2rem;
  font-weight: bold;
  outline: none;
  border: none;
  cursor: pointer;
  color: white;
  opacity: 0.5;
  text-transform: uppercase;
  background: linear-gradient(27deg, #554cee 0%, #00d4ff 100%);
  box-shadow: 5px 5px 5px 0px rgba(8, 29, 112, 0.1);
  -webkit-transform: rotateY(50deg);
          transform: rotateY(50deg);
}
.container .button-container button.reverse {
  -webkit-transform: rotateY(-50deg);
          transform: rotateY(-50deg);
}
.container .button-container button:hover {
  -webkit-transform: rotateY(0deg);
          transform: rotateY(0deg);
  opacity: 1;
}

@-webkit-keyframes bounce {
  0% {
    -webkit-transform: translateY(0);
            transform: translateY(0);
  }
  25% {
    -webkit-transform: translateY(10px) rotateZ(2deg);
            transform: translateY(10px) rotateZ(2deg);
  }
  75% {
    -webkit-transform: translateY(-10px) rotateZ(-2deg);
            transform: translateY(-10px) rotateZ(-2deg);
  }
  100% {
    -webkit-transform: translateY(0);
            transform: translateY(0);
  }
}

@keyframes bounce {
  0% {
    -webkit-transform: translateY(0);
            transform: translateY(0);
  }
  25% {
    -webkit-transform: translateY(10px) rotateZ(2deg);
            transform: translateY(10px) rotateZ(2deg);
  }
  75% {
    -webkit-transform: translateY(-10px) rotateZ(-2deg);
            transform: translateY(-10px) rotateZ(-2deg);
  }
  100% {
    -webkit-transform: translateY(0);
            transform: translateY(0);
  }
}