body {
  background: black;
}

.arrow {
  position: fixed;
  bottom: 0;
  left: 50%;
  margin-left:-20px;
}

.bounce {
	-webkit-animation-name: bounce;
	-moz-animation-name: bounce;
	-o-animation-name: bounce;
	animation-name: bounce;
}
.animated{-webkit-animation-fill-mode:both;
-moz-animation-fill-mode:both;
-ms-animation-fill-mode:both;
-o-animation-fill-mode:both;

            animation-iteration-count: infinite;
       -moz-animation-iteration-count: infinite;
    -webkit-animation-iteration-count: infinite;

animation-fill-mode:both;
-webkit-animation-duration:2s;
-moz-animation-duration:2s;
-ms-animation-duration:2s;
-o-animation-duration:2s;
animation-duration:2s;
}


@-webkit-keyframes bounce {
	0%, 20%, 50%, 80%, 100% {-webkit-transform: translateY(0);}	40% {-webkit-transform: translateY(-30px);}
	60% {-webkit-transform: translateY(-15px);}
}

@-moz-keyframes bounce {
	0%, 20%, 50%, 80%, 100% {-moz-transform: translateY(0);}
	40% {-moz-transform: translateY(-30px);}
	60% {-moz-transform: translateY(-15px);}
}

@-o-keyframes bounce {
	0%, 20%, 50%, 80%, 100% {-o-transform: translateY(0);}
	40% {-o-transform: translateY(-30px);}
	60% {-o-transform: translateY(-15px);}
}
@keyframes bounce {
	0%, 20%, 50%, 80%, 100% {transform: translateY(0);}
	40% {transform: translateY(-30px);}
	60% {transform: translateY(-15px);}
}