body,html{
    width: 100vw;
    height: 100vh;
    margin: auto;
    font-family: Arial, Helvetica, sans-serif;

}
header,footer{
    background-color: saddlebrown;
    color: white;
    text-align: center;
    padding: 7px;
    float: left;
    width: 100%;
    clear: both;
}
nav{
    background-color: peru;
    width: 80%;
    float: left;
    height: 40px;
    padding-top: 20px;
}
main{
    float: left;
    width: 80%;
    height: 700px;
    font-size: 120%;
    overflow-y: scroll;
}
article{
    background-color: peru;
    color: white;
    float: right;
    width: 20%;
    height: 760px;
}
a{
    color: #DDD;
    padding-left: 90px;
    float: left;
    font-size: 140%;
    text-decoration: none;
}
a:hover{
    color: white;

}
img{
    float: left;
    margin: 30px;
}