a:hover, a:focus {
  color: #24837B;
}

::selection {
    background: rgba(36, 131, 123, 0.2); 
    color: inherit;
}

::-moz-selection {
    background: rgba(36, 131, 123, 0.2);
    color: inherit;
}

.citation {
    font-family: Georgia, serif;
    color: #6F6E69;
}

.bookshelf img:hover {
  transform: scale(1.10);
}

.book-cover:hover {
    transform: translateY(-5px);
}