style.css

*{
    margin: 0;
    padding: 0;
}

body{
    overflow: hidden;
   /* animation:  shakeBody linear 6s infinite; */
}

.sky{
    height: 100vh;
    width:100vw;
    background-image: url(background.jpg);
    background-repeat: no-repeat;
    position: absolute;
    animation:  shakeSky linear 6s infinite;
}

.trees{
    height: 100vh;
    width: 100%;
    background-image: url(trees.png);
    background-size: cover;
    position: absolute;
}

.track{
    height: 60vh;
    width: 800vw;
    background-image: url(track.png);
    background-repeat: repeat-x;
    position: absolute;
    top: 88vh;
    animation: carMove linear 6s infinite;
}

.car{
    height: 100px;
    width : 380px;
    background-image: url(car_body.png);
    background-size: cover;
    background-repeat: no-repeat;
    position: absolute;
    left: 444px;
    bottom: 18px;
    animation:  shake linear .3s infinite; 
}

.wheel1 img{
    width: 77px;
    position: relative;
    top: 30px;
    left: 44px;
    animation:  wheelRotation linear .16s infinite;
}

.wheel2 img{
    width: 77px;
    position: relative;
    top: -43px;
    left: 234px;
    animation:  wheelRotation linear .16s infinite;
}

@keyframes wheelRotation{
    100%{
        transform: rotate(360deg);
    }
}

@keyframes carMove{
    100%{
        transform: translateX(-500vw);
    }
}

@keyframes shake{
    0%{ 
        transform: translateY(-5px); /* translate Y isliye taaki car ko upar aur neeche ghuma sake */
   } 
   50%{
        transform: translateY(5px);
    }
    100%{
        transform: translateY(-5px);
    }
} 

@keyframes shakeBody{
    0%{
        transform: translateY(-50px); /* translate Y isliye taaki car ko upar aur neeche ghuma sake */
    }
    50%{
        transform: translateY(50px);
    }
    100%{
        transform: translateY(-50px);
    }
}

@keyframes shakeSky{
    0%{
        transform: translateY(-50px); 
    }
    50%{
        transform: translateY(50px);
    }
    100%{
        transform: translateY(-50px);
    }
}