body {
    background-color: black;
    max-width: 1200px;
    margin: auto;
    color: black;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 20px;
}

header {
    width: 100%;
    color: white;
    padding: 15px;
}

section {
    background-color: whitesmoke;
    width: 90%;
    margin: 15px auto;
    padding: 15px;
    text-align: center;
}

main {
    background-color: whitesmoke;
    width: 80%;
    margin: auto;
    overflow: auto;
    padding: 15px;
}

article {
    background-color: whitesmoke;
    width: 50%;
    float: left;
    padding: 15px;
    margin: 15px auto;
}

aside {
    background-color: whitesmoke;
    width: 35%;
    float: right;
    padding: 15px;
    margin: 15px auto;
}

footer {
    background-color: whitesmoke;
    width: 90%;
    margin: 15px auto;
    overflow: auto;
    padding: 15px;
}

div {
    display: inline-block;
    font-size: 14px;
    padding: 15px;
}

header h1 {
    display: inline-block;
    position: relative;
    left: 7em;
    bottom: 1em;
}

header img {
    display: inline-block;
    width: 10%;
    position: relative;
    left: 15em;
}

article img {
    width: 100%;
}

article h3 {
    text-align: center;
}

footer div {
    position: relative;
    left: 15em;
}