style.css

body {
    text-align: center;
    background-color: #777;
    color: #000000;
    max-width: 960px;
    margin: auto;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 18px;
}

.header {
    background-color: #ebebeb;
    text-align: center;
    padding: 1px 1px;
}

.nav {
    background-color: #ebebeb;
    text-align: center;
    padding: 1px 1px;
}

.container {
    position: relative;
    max-width: 960px;
    margin-bottom: 20px;
    height: 300px;
}

section {
    background-color: #ebebeb;
    color: #777;
    text-align: center;
    padding: 8px;
    width: 495px;
    float: left;
    
}
.section1 {
    background-color: #ebebeb;
    color: #777;
    text-align: center;
    padding: 1px;
    margin: 10px;
}

article {
    text-align: center;
    background-color: #777;
    color: #ebebeb;
    padding: 3px;
    max-width: 485px;
    float: center;
    margin: 10px;
}
aside { 
    max-width: 495px;
    height: 100%;
    background-color: #ebebeb;
    color: #777;
    float: right;
    padding: 8px;
    width: 415px;
}

footer {
    background-color: #ebebeb;
    text-align: center; 
    clear: both;
    position: relative;
    padding: 1px 1px;
}