HTMLify

body {
    background: #151515;
    overflow: hidden;
    display: grid;
    place-items: center;
    height: 100vh;
}

.wrapper {
    margin: 0 auto;
    position: relative;
    display: block;
    width: 300px;
    height: 100px;
    overflow: hidden;
    border-bottom: 3px solid #fff;
    color: #fff;
}

.tree {
    position: absolute;
    height: 100px;
    width: 35px;
    bottom: 0;
    background: url(tree.svg) no-repeat;
    animation: tree 3s 0s linear infinite;
}

.truck,
.wheels {
    transition: all ease;
    width: 85px;
    margin-right: -60px;
    bottom: 0px;
    right: 50%;
    position: absolute;
    background: #eee;
}

.truck {
    background: url(truck.svg) no-repeat;
    background-size: contain;
    height: 60px;
    animation: truck 4s 0.08s ease infinite;
}

.truck::before {
    content: " ";
    position: absolute;
    width: 25px;
    box-shadow: -30px 28px 0 1.5px #fff, -35px 18px 0 1.5px #fff;
    animation: wind 1.5s 0s ease infinite;
}

.wheels {
    background: url(wheels.svg) no-repeat;
    height: 15px;
    margin-bottom: 0;
    animation: truck 4s 0.001s ease infinite;
}

@keyframes tree {
    0% {
        transform: translate(1350px);
    }

    100% {
        transform: translate(-50px);
    }
}

@keyframes truck {
    6% {
        transform: translateY(0px);
    }

    7% {
        transform: translateY(-6px);
    }

    9% {
        transform: translateY(0px);
    }

    10% {
        transform: translateY(-1px);
    }

    11% {
        transform: translateY(0px);
    }
}

@keyframes wind {
    50% {
        transform: translateY(3px);
    }
}