@import url(https://fonts.googleapis.com/css?family=Open+Sans:700,300);
.frame {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 400px;
    height: 400px;
    margin-top: -200px;
    margin-left: -200px;
    border-radius: 2px;
    box-shadow: 4px 8px 16px 0 rgba(0, 0, 0, 0.1);
    overflow: hidden;
    background: #4B4841;
    color: #333;
    font-family: 'Open Sans', Helvetica, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.center {
    position: absolute;
    top: 50%;
    left: 50%;
    -webkit-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    perspective: 1000px;
    overflow: hidden;

}

.card {
    position: relative;
    width: 300px;
    height: 200px;
    transition: transform 0.8s;
    transform-style: preserve-3d;
    box-shadow: 8px 8px 16px 0 rgba(0, 0, 0, 0.1);
    border-radius: 10px;
}

.front, .back {
    position: absolute;
    display: flex;
    text-align: center;
    align-content: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 10px;
}

.front img {
    animation: bike 0.8s infinite;
}

.back img {
    animation: helicopter 0.8s infinite;
}

.front {
    background: #FFCE4E;
}

.center:hover .card{
    transform: rotateX(180deg);
}

.front:hover .back{
    transform: rotateX(0);
}

.back {
    transform: rotateX(180deg);
    background: #FFCE4E;
}

.street {
    position: absolute;
    top: 135px;
    width: 20px;
    height: 4px;
    border-radius: 15px;
    background: #4B4841;
    animation: street 1s linear infinite;
    backface-visibility: hidden;
}

.street-1 {
    width: 4px;
    left: 140px;
}
.street-2 {
    width: 10px;
    left: 146px;
}
.street-3 {
    width: 20px;
    left: 158px;
}
.street-4 {
    width: 15px;
    left: 190px;
}
.street-5 {
    width: 8px;
    left: 210px;
}
.street-6 {
    width: 20px;
    left: 260px;
}

.street-7 {
    width: 4px;
    left: 270px;
}
.street-8 {
    width: 10px;
    left: 290px;
}
.street-9 {
    width: 20px;
    left: 310px;
}
.street-10 {
    width: 15px;
    left: 330px;
}
.street-11 {
    width: 8px;
    left: 350px;
}
.street-12 {
    width: 20px;
    left: 370px;
}


.cloud {
    position: absolute;
    top: 135px;
    width: 20px;
    height: 4px;
    border-radius: 15px;
    background: #4B4841;
    animation: cloud 1s linear infinite;
    backface-visibility: hidden;
}

.cloud-1 {
    width: 4px;
    top: 135px;
    left: 140px;
}
.cloud-2 {
    width: 10px;
    top: 100px;
    left: 146px;
}
.cloud-3 {
    width: 20px;
    top: 70px;
    left: 158px;
}
.cloud-4 {
    top: 120px;
    width: 15px;
    left: 190px;
}
.cloud-5 {
    top: 40px;
    width: 8px;
    left: 210px;
}
.cloud-6 {
    top: 150px;
    width: 20px;
    left: 260px;
}

.cloud-7 {
    top: 10px;
    width: 4px;
    left: 270px;
}
.cloud-8 {
    top: 120px;
    width: 10px;
    left: 290px;
}
.cloud-9 {
    top: 175px;
    width: 20px;
    left: 310px;
}
.cloud-10 {
    top: 70px;
    width: 15px;
    left: 330px;
}
.cloud-11 {
    top: 190px;
    width: 8px;
    left: 350px;
}
.cloud-12 {
    top: 125px;
    width: 20px;
    left: 370px;
}

@keyframes bike {
    0%, 100% {
        transform: scaleY(1);
    }
    50% {
        transform: scaleY(1.03);
    }
}

@keyframes street {
    0% {
        transform: translate3d(0, 0, 0) scaleX(1);
    }
    100% {
        transform: translate3d(-400px,0,0) scaleX(.8);
    }
}

@keyframes helicopter {
    0%, 100% {
        transform: translate3d(0,-5px,0);
    }
    50% {
        transform: translate3d(0,5px,0);
    }
}

@keyframes cloud {
    0% {
        transform: translate3d(0, 0, 0) scaleX(1);
    }
    100% {
        transform: translate3d(-400px,0,0) scaleX(.8);
    }
}