style.css

html, body {
    height: 100%;
    margin: auto;
    /* background: black; */
    color: white;
}

section {
    background: black;
    height: 85%;
}

article {
    text-align: center;
    /* background: white; */
    float: left;
    width: 70%;
    height: 100%;
    position: relative;
    display: table;
}

article div {
    display: table-cell;
    vertical-align: middle;
}

article h1 {
    margin: 10px 10px 0px;
    padding: 10px 10px 0 10px;
}

article p {
    margin: 0 10px;
    padding: 0 10px;
}

footer {
    background: gold;
    width: 100%;
    height: 5%;

}
footer p {
    color: blue;
    font-size: 5%;
    text-align: center;
}

nav {
    width: 15%;
    height: 100%;
}

.nav-right {
    background: red;
    float: right;
    width: 15%;
    height: 100%;
}

.nav-left {
    background: blue;
    float: left;
    width: 15%;
    height: 100%;
}

.nav-left p {
    color: green;
}

.nav-right p {
    color: yellow;
}

nav p {
    font-size: 5%;
    text-align: center;
}


header {
    background: green;
    width: 100%;
    float: left;
    height: 10%;

}

header p {
    color: red;
    font-size: 5%;
    text-align: center;
}