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

.sky {
  height: 100%;
  background: #007fd5;
  position: relative;
  overflow: hidden;
  -webkit-animation: sky_background 50s ease-out infinite;
  -moz-animation: sky_background 50s ease-out infinite;
  -o-animation: sky_background 50s ease-out infinite;
  -webkit-transform: translate3d(0, 0, 0);
  -moz-transform: translate3d(0, 0, 0);
  -o-transform: translate3d(0, 0, 0)
}


.moon {
  background: url(../img/moon.png);
  background-repeat:no-repeat;
  position: absolute;
  left: 0;
  height: 100%;
  width: 300%;
  -webkit-animation: moon 50s linear infinite;
  -moz-animation: moon 50s linear infinite;
  -o-animation: moon 50s linear infinite;
  -webkit-transform: translate3d(0, 0, 0);
  -moz-transform: translate3d(0, 0, 0);
  -o-transform: translate3d(0, 0, 0)
}

.clouds_one {
  background: url(‘../images/cloud_one.png’);
  background-repeat:repeat-x;
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 300%;
  -webkit-animation: cloud_one 50s linear infinite;
  -moz-animation: cloud_one 50s linear infinite;
  -o-animation: cloud_one 50s linear infinite;
  -webkit-transform: translate3d(0, 0, 0);
  -moz-transform: translate3d(0, 0, 0);
  -o-transform: translate3d(0, 0, 0)
}

.clouds_two {
  background: url(../img/cloud_two.png);
  background-repeat:repeat-x;
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 300%;
  -webkit-animation: cloud_two 75s linear infinite;
  -moz-animation: cloud_two 75s linear infinite;
  -o-animation: cloud_two 75s linear infinite;
  -webkit-transform: translate3d(0, 0, 0);
  -moz-transform: translate3d(0, 0, 0);
  -o-transform: translate3d(0, 0, 0)
}

.clouds_three {
  background: url(../img/cloud_three.png);
  background-repeat:repeat-x;
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 300%;
  -webkit-animation: cloud_three 100s linear infinite;
  -moz-animation: cloud_three 100s linear infinite;
  -o-animation: cloud_three 100s linear infinite;
  -webkit-transform: translate3d(0, 0, 0);
  -moz-transform: translate3d(0, 0, 0);
  -o-transform: translate3d(0, 0, 0)
}

@-webkit-keyframes sky_background {
  0% {
    background: #007fd5;
    color: #007fd5
  }
  50% {
    background: #000;
    color: #a3d9ff
  }
  100% {
    background: #007fd5;
    color: #007fd5
  }
}

@-webkit-keyframes moon {
  0% {
    opacity: 0;
    left: -200% -moz-transform: scale(0.5);
    -webkit-transform: scale(0.5);
  }
  50% {
    opacity: 1;
    -moz-transform: scale(1);
    left: 0% bottom: 200px;
    -webkit-transform: scale(1);
  }
  100% {
    opacity: 0;
    bottom: 500px;
    -moz-transform: scale(0.5);
    -webkit-transform: scale(0.5);
  }
}

@-webkit-keyframes cloud_one {
  0% {
    left: 0
  }
  100% {
    left: -200%
  }
}

@-webkit-keyframes cloud_two {
  0% {
    left: 0
  }
  100% {
    left: -200%
  }
}

@-webkit-keyframes cloud_three {
  0% {
    left: 0
  }
  100% {
    left: -200%
  }
}

@-moz-keyframes sky_background {
  0% {
    background: #007fd5;
    color: #007fd5
  }
  50% {
    background: #000;
    color: #a3d9ff
  }
  100% {
    background: #007fd5;
    color: #007fd5
  }
}

@-moz-keyframes moon {
  0% {
    opacity: 0;
    left: -200% -moz-transform: scale(0.5);
    -webkit-transform: scale(0.5);
  }
  50% {
    opacity: 1;
    -moz-transform: scale(1);
    left: 0% bottom: 200px;
    -webkit-transform: scale(1);
  }
  100% {
    opacity: 0;
    bottom: 500px;
    -moz-transform: scale(0.5);
    -webkit-transform: scale(0.5);
  }
}

@-moz-keyframes cloud_one {
  0% {
    left: 0
  }
  100% {
    left: -200%
  }
}

@-moz-keyframes cloud_two {
  0% {
    left: 0
  }
  100% {
    left: -200%
  }
}

@-moz-keyframes cloud_three {
  0% {
    left: 0
  }
  100% {
    left: -200%
  }
}


.btn-container{
  position: absolute;
  left: 50%;
  margin: 450px 0 0 -100px;
}

.btn{
  width: 200px;
  height: 50px;
  line-height: 50px;  
  background-color: #FF6138;
  border-radius: 8px;
  color: #fff;
  font-family: 'Indie Flower', cursive;
  font-size: 22px;
  font-weight: normal;
  text-decoration: none;
  text-align: center;
  display: inline-block;
  position: relative;
  -webkit-transition-duration: 0.3s;
  transition-duration: 0.3s;
  -webkit-transition-property: -webkit-transform;
  transition-property: transform;
  -webkit-transform: translateZ(0);
  -ms-transform: translateZ(0);
  transform: translateZ(0);
  box-shadow: 0 0 1px rgba(0, 0, 0, 0);
  -webkit-transform: translateY(-6px);
  -ms-transform: translateY(-6px);
  transform: translateY(-6px);
  -webkit-animation-name: hover;
  animation-name: hover;
  -webkit-animation-duration: 1.5s;
  animation-duration: 1.5s;
  -webkit-animation-delay: 0.3s;
  animation-delay: 0.3s;
  -webkit-animation-timing-function: linear;
  animation-timing-function: linear;
  -webkit-animation-iteration-count: infinite;
  animation-iteration-count: infinite;
  -webkit-animation-direction: alternate;
  animation-direction: alternate;
  &:before{
    pointer-events: none;
    position: absolute;
    z-index: -1;
    content: '';
    top: 100%;
    left: 5%;
    height: 10px;
    width: 90%;
    opacity: 0;
    background: -webkit-radial-gradient(center, ellipse, rgba(0, 0, 0, 0.35) 0%, rgba(0, 0, 0, 0) 80%);
    background: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.35) 0%, rgba(0, 0, 0, 0) 80%);
    -webkit-transition-duration: 0.3s;
    transition-duration: 0.3s;
    -webkit-transition-property: -webkit-transform, opacity;
    transition-property: transform, opacity;
    opacity: .4;
    -webkit-transform: translateY(6px);
    -ms-transform: translateY(6px);
    transform: translateY(6px);
    -webkit-animation-name: hover-shadow;
    animation-name: hover-shadow;
    -webkit-animation-duration: 1.5s;
    animation-duration: 1.5s;
    -webkit-animation-delay: .3s;
    animation-delay: .3s;
    -webkit-animation-timing-function: linear;
    animation-timing-function: linear;
    -webkit-animation-iteration-count: infinite;
    animation-iteration-count: infinite;
    -webkit-animation-direction: alternate;
    animation-direction: alternate;
  }
  &:hover{
    background-color: #e16e50;
  }
}

@keyframes hover {
  50% {
    -webkit-transform: translateY(-3px);
    -ms-transform: translateY(-3px);
    transform: translateY(-3px);
  }

  100% {
    -webkit-transform: translateY(-6px);
    -ms-transform: translateY(-6px);
    transform: translateY(-6px);
  }
}

@-webkit-keyframes hover-shadow {
  0% {
    -webkit-transform: translateY(6px);
    transform: translateY(6px);
    opacity: .4;
  }

  50% {
    -webkit-transform: translateY(3px);
    transform: translateY(3px);
    opacity: 1;
  }

  100% {
    -webkit-transform: translateY(6px);
    transform: translateY(6px);
    opacity: .4;
  }
}

@keyframes hover-shadow {
  0% {
    -webkit-transform: translateY(6px);
    -ms-transform: translateY(6px);
    transform: translateY(6px);
    opacity: .4;
  }

  50% {
    -webkit-transform: translateY(3px);
    -ms-transform: translateY(3px);
    transform: translateY(3px);
    opacity: 1;
  }

  100% {
    -webkit-transform: translateY(6px);
    -ms-transform: translateY(6px);
    transform: translateY(6px);
    opacity: .4;
  }
}

@-webkit-keyframes hover {
  50% {
    -webkit-transform: translateY(-3px);
    transform: translateY(-3px);
  }

  100% {
    -webkit-transform: translateY(-6px);
    transform: translateY(-6px);
  }
}

@keyframes hover {
  50% {
    -webkit-transform: translateY(-3px);
    -ms-transform: translateY(-3px);
    transform: translateY(-3px);
  }

  100% {
    -webkit-transform: translateY(-6px);
    -ms-transform: translateY(-6px);
    transform: translateY(-6px);
  }
}