/* 1. Element name selector */
body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f9;
    margin: 20px;
}

/* 2. Class name selector */
.resource-link {
    color: #c5050c; /* UW Madison Red */
    font-weight: bold;
    text-decoration: none;
}

/* 3. ID selector */
#bst-diagram {
    width: 300px;
    border: 2px solid #333;
    border-radius: 5px;
}