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

.subtitle {
    color: lightseagreen;
    text-align: center;
    font-size: 1.2em;
}

#main-title {
    font-size: 2em;
    font-weight: bold;
    color: darkblue;
}


img {
    display: block;
    margin: 10px auto;
    border: 2px solid #2980b9;
    border-radius: 5px;
}