* {
    margin: 0;
    padding: 0;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100vh;
}

#box {
    width: 900px;
    height: 200px;
    position: relative;
     overflow: hidden; 
}

#box #roadContainer {
    height: 80px;
    width: 1200px;
    position: absolute;
    bottom: 0;
}

#box #roadContainer img {
    height: 80px;
    width: 3000px;
    position: absolute;
    left: 0;
    animation: road 1s infinite linear;
}

#dino {
    width: 50px;
    height: 50px;
    position: relative;
    top: 122px;
    left: 90px;
}

#cactus {
    width: 60px;
    height: 50px;
    position: relative;
    top: 120px;
    left: 850px;
    animation: cactus 1s infinite linear;
}

@keyframes cactus {
    0%{
        left: 800px;
    }
    100%{
        left: -20px;
    }
}

@keyframes road {
    0%{
        left: 0;
    }
    100%{
        left: -800px;
    }
}

.animate {
    animation: jump 500ms infinite;
}

@keyframes jump {
    0% {
        top: 122px;
    }
    30% {
        top: 53px;
    }
    70% {
        top: 53px;
    }
    100% {
        top: 122px;
    }
}