* {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}

html, body {
    margin:0;
    padding:0;
    background:#c7cbce;
    font-family: sans-serif;
}

body {
    padding:20px;
}

.clearfix {
    clear: both;
}

img {
    max-width: 100%;
}

p {
    line-height:1.4em;
}

.wrapper {
    max-width:800px;
    margin:30px auto;
    padding:0 20px 20px;
    background:#fff;
}

header {
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 3px;
    color:#fff;
    background:cornflowerblue;
    margin:0 -20px 20px;
    padding:20px 0 15px;
}

header h1 {
    margin:0;
}

aside {
    width:200px;
    float:left;
    margin-bottom:30px;
}

aside ul,
aside ul li {
    margin:0;
    padding:0;
    list-style-type: none;
}

a:link,
a:visited {
    color:cornflowerblue;
    text-decoration: none;
    line-height:1.5em;
}

a:active,
a:hover {
    text-decoration: underline;
}

.main {
    margin-left: 220px;
}

footer {
    max-width: 800px;
    text-align: center;
    margin:0 auto;
}

@media screen and (max-width:550px) {
    aside {
        float: right;
    }

    aside li {
        text-align: right;
    }

    .main {
        margin-left:0;
    }
}