body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f8f8f8;
}

.content {
    max-width: 1200px;
    margin: auto;
    padding: 20px;
    background-color: white;
}

aside {
    float: right;
    margin-left: 20px;
    max-width: 300px;
}

main {
    margin-right: 320px; 
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

footer {
    clear: both;
    text-align: center;
    padding-top: 20px;
}