@import url("https://fonts.googleapis.com/css?family=Comfortaa");
* {
  box-sizing: border-box;
}

body,
html {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;
}

body {
  background-color: #a74006;
  font-family: sans-serif;
}

.container {
  z-index: 1;
  position: absolute;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
  text-align: center;
  padding: 10px;
  min-width: 300px;
}
.container div {
  display: inline-block;
}
.container .lock {
  opacity: 1;
}
.container h1 {
  font-family: 'Comfortaa', cursive;
  font-size: 100px;
  text-align: center;
  color: #eee;
  font-weight: 100;
  margin: 0;
}
.container p {
  color: #fff;
}

.lock {
  transition: 0.5s ease;
  position: relative;
  overflow: hidden;
  opacity: 0;
}
.lock.generated {
  -webkit-transform: scale(0.5);
          transform: scale(0.5);
  position: absolute;
  -webkit-animation: 2s move linear;
          animation: 2s move linear;
  -webkit-animation-fill-mode: forwards;
          animation-fill-mode: forwards;
}
.lock ::after {
  content: '';
  background: #a74006;
  opacity: 0.3;
  display: block;
  position: absolute;
  height: 100%;
  width: 50%;
  top: 0;
  left: 0;
}
.lock .bottom {
  background: #D68910;
  height: 40px;
  width: 60px;
  display: block;
  position: relative;
  margin: 0 auto;
}
.lock .top {
  height: 60px;
  width: 50px;
  border-radius: 50%;
  border: 10px solid #fff;
  display: block;
  position: relative;
  top: 30px;
  margin: 0 auto;
}
.lock .top::after {
  padding: 10px;
  border-radius: 50%;
}

@-webkit-keyframes move {
  to {
    top: 100%;
  }
}

@keyframes move {
  to {
    top: 100%;
  }
}
@media (max-width: 420px) {
  .container {
    -webkit-transform: translate(-50%, -50%) scale(0.8);
            transform: translate(-50%, -50%) scale(0.8);
  }

  .lock.generated {
    -webkit-transform: scale(0.3);
            transform: scale(0.3);
  }
}