html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed, 
figure, figcaption, footer, header, hgroup, 
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
	margin: 0;
	padding: 0;
	border: 0;
	font-size: 100%;
	font: inherit;
	vertical-align: baseline;
}
article, aside, details, figcaption, figure, 
footer, header, hgroup, menu, nav, section {
	display: block;
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}


body {
    display: grid;
    grid-template-areas:
        "header header"
        "nav main"
        "footer footer";
    grid-template-columns: 1fr 3fr;
    grid-template-rows: auto 1fr auto;
    height: 100vh;
}

header {
    grid-area: header;
    background-color: #f6ff00;
    padding: 1rem;
    text-align: center;
}

nav {
    grid-area: nav;
    background-color: #333;
    color: white;
    padding: 1rem;
}

main {
    grid-area: main;
    padding: 1rem;
}

footer {
    grid-area: footer;
    background-color: #ffab04;
    text-align: center;
    padding: 1rem;
}

a {
    color: white;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}