CSS

body{
    background-color: lightblue;
}

#wrapper>header{
    width: 70%;
    margin-left: 35%;
}

a{
    text-decoration: none;
}

section{
    width: 30%;
    margin: 0 auto;

}

nav>ul>li{
    background-color: white;
    border: solid black;
    float: left;
    margin-left: 2%;
    margin-bottom: 1%;
    list-style: none;
}

nav>ul{
    text-decoration: line-through;
}


article{
    float: left;
    border: solid black;
    margin-bottom: 2%;
    background-color: white;

}

aside{
    border: solid black;
    margin-left: 1%;
    margin-bottom: 10px;
    background-color: white;
    width: 20%;
    float: left;
}

p{
    font-size: 0.8em;
}

footer{
    width: 70%;
    border: solid black;
    background-color: white;
    float: left;
    margin-left: 20%;
    text-align: center;
}