body {
    background-color: #008080;
    background-image: url("images/bg/98se-tan-static.png");
    background-position: bottom left;
    background-attachment: fixed;
    background-repeat: no-repeat;
    background-size: calc(100vw/4) auto;
    image-rendering: auto;
    color: #222;
    font-family: Arial, Helvetica, sans-serif;
}

* {
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}

.content-body {
    font-size: 10pt;
    width: 478px;
    height: 323px;
    background-color: white;
    z-index: 1;
}

.masked-bg {
    background-image: url("images/pd-clouds.gif");
    background-size: left top;
    mask-image: radial-gradient(farthest-corner at 0px 0px, black 0%, transparent 65%);
    -webkit-mask-image: radial-gradient(farthest-corner at 0px 0px, black 0%, transparent 65%);
    position: absolute;
    width: inherit;
    height: inherit;
    z-index: -1;
}

.bg-img {
    position: absolute;
    width: inherit;
    height: inherit;
    background-image: url("images/monitor.png");
    background-repeat: no-repeat;
    background-position: calc(100% + 35px) calc(100% + 35px);
    background-blend-mode: luminosity;
    background-size: auto 230px;
    opacity: 0.3;
    z-index: -2;
    filter: brightness(40%) contrast(80%) sepia(100%) brightness(220%) hue-rotate(187deg) saturate(300%);
}

.main-grid {
    display: grid;
    align-content: space-between;
    grid-template-areas: 'header header' 'sidebar content' 'footer footer';
    grid-template-rows: 81px 2fr auto;
    grid-template-columns: 180px auto;
    position: relative;
}

hr {
    margin: 0;
    border: none;
    width: 100%;
    height: 1px;
    background: linear-gradient( to right, #ff3100 20.5%, #ffce00 20.5%, #ffce00 41%, #63ce31 41%, #63ce31 61.5%, #009cff 61.5%, #009cff 80%, #009cff 80%, white 100%);
    position: relative;
    z-index: 1;
}

.header {
    grid-area: header;
}

.sidebar {
    grid-area: sidebar;
}

.content {
    grid-area: content;
}

.footer {
    grid-area: footer;
    padding: 12px 12px 0px 8px;
    font-size: 9pt;
    vertical-align: middle;
    line-height: 12px;
}

input[type=checkbox] {
    vertical-align: middle;
    display: inline-block;
}

label {
    display: inline-block;
    vertical-align: middle;
}

.close-button {
    width: 75px;
    height: 23px;
    float: right;
    position: relative;
    top: -5px;
    left: 4px;
    font-size: 9pt;
}

.header {
    letter-spacing: -0.05em;
}

.logo {
    display: inline;
    size: 32px 32px;
}

.logo img {
    margin-top: -100%;
    size: 32px 32px;
}

.sidebar-list {
    letter-spacing: -0.00625em;
    width: 100%;
}

.sidebar-list li {
    border-bottom: #c0c0c0 2px solid;
    height: 24px;
}

.list-deco {
    display: inline-block;
    width: 3px;
    position: absolute;
    height: 24px;
    pointer-events: none;
}

.sidebar-list a:nth-of-type(1) .list-deco {
    background-color: #009cff;
}

.sidebar-list a:nth-of-type(2) .list-deco {
    background-color: #ff3100;
}

.sidebar-list a:nth-of-type(3) .list-deco {
    background-color: #63ce31;
}

.sidebar-list a:nth-of-type(4) .list-deco {
    background-color: #ffce00;
}

.sidebar-list a {
    display: block;
    text-decoration: none;
    color: black;
}

.sidebar-list a:nth-of-type(1):hover {
    background-image: linear-gradient(to right, #84CEFF, white)
}

.sidebar-list a:nth-of-type(2):hover {
    background-image: linear-gradient(to right, #FF9C84, white)
}

.sidebar-list a:nth-of-type(3):hover {
    background-image: linear-gradient(to right, #B5E79C, white)
}

.sidebar-list a:nth-of-type(4):hover {
    background-image: linear-gradient(to right, #FFE784, white)
}

.sidebar-header {
    font-variant: small-caps;
    letter-spacing: 0.2em;
    color: white;
    background-color: black;
    line-height: 15px;
    height: 15px;
    border-bottom: #c0c0c0 2px solid;
}

h1 {
    font-size: 11pt;
    padding-left: 36px;
    margin-bottom: -2px;
    margin-top: 29px
}

.header a {
    text-decoration: none;
    color: black;
}

h2 {
    font-size: 16pt;
    padding-left: 41px;
    margin-top: -3px;
    line-height: 21px;
}

h3 {
    font-size: 8pt;
    padding-left: 13px;
}

h4 {
    font-size: 10pt;
    font-weight: bold;
    line-height: 24px;
    padding-left: 13px;
    vertical-align: middle;
    display: inline;
    pointer-events: none;
}

h4[data-visited]::after {
    content: " ✔";
}

h5 {
    font-size: 14pt;
    font-weight: bold;
    line-height: 17px;
    margin-top: 7px;
    margin-bottom: 11px;
}

.content {
    margin-left: 14px;
    margin-right: 14px;
}

.content p {
    line-height: 16px;
    margin-bottom: 16px;
    text-shadow: white 1px 0px;
}

.header-heavy {
    font-weight: 900;
}

sup {
    font-size: xx-small;
    vertical-align: super;
}

strong {
    font-weight: bold;
}

.center {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

div.content>div:not(:first-child) {
    display: none;
}