body {
    margin: 0;
    padding: 0;
}

.container {
    display: flex;
    width: 100vw;
    height: 100vh;
    flex-direction: column;
    justify-content: center;
}

.main {
    display: flex;
    flex-direction: row;
    width: 100%;
    height: 80%;
}

header {
    text-align: center;
    display: flex;
    justify-content: center;
    width: 100%;
    height: 10%;
    align-self: flex-start;
    background-color: gray;
}

footer {
    display: flex; 
    justify-content: center;
    width: 100%;
    height: 10%;
    align-self: flex-end;
    background-color: gray;
}

nav {
background-color: lightgrey;
width: 25%;

}

section {
    width: 75%;
    background-color: white;
}