body {
    background-color: #0d1117;
    color: white;
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;

    display: flex;
    flex-direction: column;
    /* Optional: sets the body height to the full viewport height */
    min-height: 100vh; 
    margin: 0; /* Remove default body margin */

    justify-content: center; /* Aligns along the main (horizontal) axis */
    align-items: center; /* Aligns along the cross (vertical) axis */
    text-align: center;
}

body > * {
    /* Ensures each direct child takes the full width of the body */
    width: 100%; 
    /* Ensures items can grow to fill available vertical space if needed */
    flex-grow: 1; 
}

/* no underline */
a {
  text-decoration: none;
}

/* unvisited link */
a:link {
    color: white;
}

/* visited link */
a:visited {
    color: white;
}

/* mouse over link */
a:hover {
    color: hotpink;
}

/* selected link */
a:active {
    color: blue;
}

.gallery-item {
    margin-top: 2em;
    margin-bottom: 2em;
}

.toc-list {
    list-style-type: none;
}

.toc-list a {
    font-size: 3em;
}