#handbook {
    background: linear-gradient(rgba(55, 59, 106, 0.98) 0%, rgba(55, 59, 106, 0.9) 50%, rgba(45, 45, 90, 0.6));
    border-left: 1px rgba(255, 255, 255, 0.1) solid;
    top: 0;
    bottom: 0;
    right: 0;
    width: 300px;
    transition: transform 0.15s ease-out;
}

#handbook.closed {
    transform: translateX(100%);
}

.chapter p {
    line-height: 1.3em;
    margin-bottom: 16px;
}

.chapter--scroll p:first-child,
.chapter .display__visual + p {
    filter: brightness(95%);
    font-style: italic;
}

.link__help {
    color: rgba(0, 0, 0, 0.6);
    background-color: rgba(255, 255, 255, 0.75);
    font-size: 15px;
    display: inline-block;
    border-radius: 8px;
    padding: 0 3.5px;
    line-height: 0.95em;
    text-decoration: none;
    font-weight: 500;
    transition: background 0.05s ease-out;
}

h3 .link__help {
    margin-top: 3px;
    vertical-align: top;
}

.link__help:hover {
    background-color: rgba(255, 255, 255, 1);    
}

.link__display {
    text-decoration: none;
    font-weight: 500;
}

.display__visual {
    width: 300px;
    margin-left: -11px;
    margin-top: -12px;
    margin-bottom: 15px;
    position: relative;
    box-shadow: 0 2px 2px rgba(0, 0, 0, 0.25);
}
.display__visual:before {
    position: absolute;
    content: '';
    background-image: url(../img/big-glass-panel.png);
    background-size: 100% auto;
    background-position: 0 0;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    width: 300px;
    box-shadow: 0 1px 0 inset rgba(0, 0, 0, 0.25);
}
.visual__inner img {
    width: 100%;
    height: "auto";
    display: block;
    padding: 1px;
    opacity: 0.8;
}

.visual__inner h3 {
    font-weight: normal;
    font-size: 14px;
    position: absolute;
    width: 298px;
    left: 0;
    bottom: 0;
    padding: 6px 10px;
    margin: 1px;
    background-color: rgba(23, 20, 42, 0.6);
    text-shadow: 1px 0px 1px rgb(0, 0, 0), -1px 0px 1px rgb(0, 0, 0);
}

#handbook .chapter--closed {
    display: none;
}

#handbook .chapter--scroll {
    overflow-y: scroll;
    scrollbar-width: thin;
    scrollbar-color: rgba(55, 59, 106, 0.9) rgba(55, 59, 106, 0.5);
    position: absolute;
    top: 145px;
    right: 0;
    left: 0;
    bottom: 0;
    padding: 10px 6px;
}