*{
    margin: 0;
    padding: 0;
    }
    body{
    background: #e6e6e6;
    }
    header, .main, footer{
    width: 90%;
    max-width: 1000px;
    margin: 20px auto;
    }
    header nav{
    background: #528fd5;
    overflow: hidden;
    }
    header nav ul{
    list-style: none;
}
header nav ul li{
float: left;
}
header nav ul li a{
padding: 10px 20px;
display: block;
text-decoration: none;
color: #fff;
overflow: hidden;
}
header nav ul li a:hover{
background: #75acec;
}
.main .articles {
width: 68.5%;
margin-right: 1.5%;
float: left;
}
.main .articles article{
padding: 20px;
background: #fff;
margin-bottom: 20px;
}
footer{
background: #000;
color: #fff;
clear: both;
padding: 10px 0;
text-align: center;
}
aside{
width: 30%;
background: #80faa2;
float: left;
padding: 20px;
box-sizing: border-box;
}