img {
    display: block;
    transition: all 0.4s ease;
    position: absolute;
    bottom: -40px;
    left: 50%;
    transform: translateX(-50%);
}

body {
    overflow: hidden;

    /* short version: */
    /* background: url(road.jpg) no-repeat center 60% fixed; */

    /* long version: */
    background-image: url(road.jpg);
    background-position-x: center;
    background-position-y: 60%;
    background-repeat: no-repeat;
    background-attachment: fixed;

    /* short version */
    /* animation: drive 60s linear; */

    /* long version */
    animation-name: drive;
    animation-duration: 60s;
    animation-timing-function: linear;
    animation-fill-mode: forwards;
}

@keyframes drive {
    from {
        background-size: 100%;
    }

    to {
        background-size: 500%;
    }
}

button {
    background-color: rgba(90, 90, 88, 0.546);
    color: white;
    border: none;
    padding: 10px 15px;
    cursor: pointer;
    border-radius: 10px;
    transition: all 0.4s linear;
    z-index: 2;
}

button:active {
    transform: scale(1.4);
}