body {
    margin: 0;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 100vh;
    font-family: 'Courier New', Courier, monospace;
}

header {
    background-color: #505050;
    height: 10vh;
    display: flex;
    justify-content: space-around;
    align-items: center;
}

nav {
    background-color: red;
    width: 100vw;
    top: -76vh;
}

.main-nav {
    display: flex;
    justify-content: space-evenly;
}

main {
    background-color: #707070;
    flex-grow: 1;
    padding: 20px;
    padding-right: 135px;
    font-size: 25px;
}

.fnav {
    background-color: rgb(10, 100, 10);
    height: 81vh;
    width: 120px;
    top: 14vh;
    right: 0;
    box-sizing: border-box;

    position: fixed;
    display: flex;
    flex-direction: column;
    justify-content: space-evenly;
    align-items: center;
    list-style-type: none;
    padding-top: 30px;
    padding-bottom: 30px;
    font-size: 20px;

    border-radius: 10ch;
    border: solid 2px whitesmoke;
    border-style: double;
}

.content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin: 15px;
    margin-right: 135px;
}

footer {
    background-color: #909090;
    height: 5vh;
    display: flex;
    justify-content: space-evenly;
    align-items: center;
}

/* When the popover is shown, make it visible */
#Navigation[popover]:popover-open {
    display: block;
}

@supports not (selector(:popover-open)) {
    #Navigation {
        display: none;
        position: absolute;
        background-color: red;
        width: 100vw;
        top: 10vh;
        left: 0;
        z-index: 999;
    }


/* show it when we open it via JS */

    #Navigation.show {
        display: block;
    }
}

#Navigation[popover]:popover-open {
    display: block;
}

@media (max-width: 480px) {
    p {
        font-size: 6vw;
    }

    div li {
        line-height: 10px;
    }
}