body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 20px;
    color: #222;
}

.section-heading {
    color: darkred;
    border-bottom: 2px solid black;
    padding-bottom: 5px;
}

#main-title {
    text-align: center;
    color: white;
    background-color: black;
    padding: 10px;
}

#tree-image {
    display: block;
    margin: 20px auto;
    width: 300px;
    border: 3px solid black;
}