* {
    box-sizing: border-box;
}

body {
    font-size: 16px;
    color: #333;
    background-color: #eee;
    height: 100vh;
}

h1, h2, h3 {
    font-weight: 900;
    font-family: Georgia, 'Times New Roman', Times, serif;
}

h1 {
    color: navy;
    text-emphasis: none;
}

p {
    margin: 10px;
    padding: 5px; 
    font-family: Arial, Helvetica, sans-serif;
}

section {
    border: 1px solid green;
    margin: 10px;
    background-color: #333;
    color: #fff;
}

aside {
    font-style: italic;
    letter-spacing: 1.2pt;
}

footer {
    border-bottom: 1px solid #000;
    border-top: 1px solid #000;
    padding: 5px;
    margin-top: 10px;
}