/* DO NOT EDIT THIS FILE FOR THIS EXERCISE! */ 


/* CSS RESETS */ 
/* ----------------------------------------------------- */

*   {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}

html    {
    margin: 0;
    padding: 0;
}

body    {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
}

img {
    display: block; 
    margin: 0 auto;
    max-width: 100%;
}

p {
    margin: 0;
    padding: 0;
}


/* CSS VARIABLES / CUSTOM PROPERTIES */ 
/* ----------------------------------------------------- */

:root {
    --margin: 20px;
}


/* BASIC BODY STYLING */ 
/* ----------------------------------------------------- */

#openPopup {
    position: fixed;
    left: calc(2 * var(--margin));
    top: calc(2 * var(--margin));
    display: ;
}

#popupCover {
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    width: 100vw;
    opacity: 40%;
    background-color: yellow;
}

#popup {
    width: 25vw;
    min-width: 250px;
    max-width: 100vw;;
    position: fixed;
    height: calc(100vh - 2 * var(--margin));
    max-height: calc(100vh -2 * var(--margin));
    overflow-y: auto;
    top: 20px;
    left: 20px;
    border: 1px solid black;
    padding: 20px;
    background-color: white;
    z-index: 20;
}

#popup > ol:first-of-type {
    list-style: upper-alpha;
}

#popup > ol {
    margin-left: 0;
    padding-left: 1em;
}

body {
    padding: 40px 20%;
}
section {
    border-bottom: 1px solid black;
}