/* Element name selector */
body {
    font-family: Arial, sans-serif;
    background-color: #f9f9f9;
    margin: 20px;
    line-height: 1.6;
}

/* Class name selector */
.section-title {
    color: #34495e;
    text-decoration: underline;
}

/* ID selector */
#main-title {
    color: #2c3e50;
    font-size: 36px;
    text-align: center;
}

#bfs-image {
    border: 3px solid #2c3e50;
    border-radius: 10px;
    margin-top: 10px;
}

a {
    color: #2980b9;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}