body {
    margin: 0;
    overflow: hidden;
    background-color: #87CEEB; /* Sky blue background */
}

canvas {
    display: block;
    margin: 0 auto;
    border: 2px solid #000; /* Black border around the canvas */
}

.road {
    background-color: gray; /* Gray road */
    position: relative;
    width: 100%;
    height: 100%;
}

.center-line {
    position: absolute;
    top: 0;
    left: 50%;
    width: 10px; /* Width of the yellow center line */
    height: 100%;
    background-color: yellow; /* Yellow center line */
    transform: translateX(-50%);
}

.flag-waver {
    position: absolute;
    bottom: 10px; /* Positioning the flag-waver at the bottom */
    left: 50%;
    transform: translateX(-50%);
    width: 50px; /* Width of the flag-waver */
    height: 100px; /* Height of the flag-waver */
}