body {
    text-align: center;
    background-color: green;
}

.track {
    width: 100%;
    height: 150px;
    background-color: brown;
    position: relative;
    overflow: hidden;
    border: 5px solid #654321;
    margin-bottom: 20px;
}

.horse {
    width: 100px;
    position: absolute;
    bottom: 10px;
    left: 0;
}