hr.main {
    border: 0;
    height: var(--border-thickness);
    background: var(--border-color);
    margin: 0;
    padding: 0;
}

.page-banner {
    width: 100%;
    display: flex;
}

.banner-portrait {
    z-index: 1;
}

img {
    height: 100%;
}

.banner-caption {
    background-color: var(--background-color);
    padding-top: 1em;
    padding-left: 4em;
    padding-bottom: 1em;
    white-space: nowrap;
    overflow: hidden;
    width: 100%;
}

.greetings {
    font-size: 140%;
    margin-bottom: .5em;
}

.page-owner {
    padding-top: .5em;
    padding-bottom: 2em;
}

.name {
    font-size: 200%;
    margin-bottom: -.1em;
}

.position {
    font-size: 90%;
    font-weight: bold;
}

.institution {}

p {
    font-weight: normal;
    text-align: justify;
}

#timestamp {
    font-style: italic;
    color: var(--border-color);
    font-size: 60%;
    width: 100%;
    text-align: right;
    padding: 0;
    margin-left: -.3em;
}

.expanded-details {
    display: block;

    border: .2em inset;

    margin-top: 0;
    margin-bottom: 1em;
    margin-left: 2em;
    margin-right: 2em;

    padding-top: 0;
    padding-bottom: .5em;
    padding-left: 1em;
    padding-right: 1em;
    
    font-size: 90%;
    background-color: var(--background-color);
    text-align: justify;
}


/* ------------------------------------------------------------------ */
/* Remove the default styles from summaries */
/* ------------------------------------------------------------------ */
summary {
    /* remove the disclosure arrows */
    display: block;
    cursor: pointer;
    white-space: nowrap;

    margin: 0;
    padding-top: .3em;
    padding-bottom: .3em;
    padding-left: .5em;

    color: blue;
    font-size: 120%;
    text-decoration: underline;    
}

summary:hover {
    background-color: var(--hover-background-color);
}

/* ------------------------------------------------------------------ */
/* Remove the default styles from summaries - Safari-specific */
/* ------------------------------------------------------------------ */
summary::marker,
summary::-webkit-details-marker {

    /* remove the disclosure arrows in Safari;
        the two selectors cover different versions of the browser */
    display: none;
}
summary:focus {

    /* Safari shows a focus indicator around summaries, 
        even when using a pointer rather than keyboard navigation, 
            so we 1) remove the focus styling */
    outline: none;
}
summary:focus-visible{

    /* and then 2) use the :focus-visible pseudo-class 
        to add it back for visitors using keyboard navigation */
    outline: .2em dotted #000;
}