html, body {
    margin: 0;
    padding: 0;
    background-color: rgb(20, 20, 20);
    color: white;
    font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Verdana, sans-serif;
    font-weight: 1.5em;
    max-width: 100%;
    overflow-x: hidden;
    position: relative;
    scroll-behavior: smooth;
}

div#header {
    background-color: rgb(10, 10, 10);
}
div#header img {
    margin: 0 auto;
    display: block;
}

div.row {
    display: flex;
    clear: both;
    margin: 2%;
    margin-bottom: 10%;
}

div.illustrations {
    flex: 40%;
    background: transparent;
}
div.content {
    flex: 60%;
    padding: 5%;
    background: linear-gradient(45deg, rgba(20,20,20,1) 0%, rgba(12,12,12,1) 50%, rgba(0,90,30,1) 100%);
}
div.content[reversed] {
    flex: 60%;
    padding: 5%;
    background: linear-gradient(45deg, rgba(0,90,30,1) 0%, rgba(12,12,12,1) 50%, rgba(20,20,20,1) 100%);
}

header {
    margin: 8%;
    text-align: center;
}
header h1 {
    font-size: 4em;
}
header h5 {
    margin-top: -2%;
}
header h3 {
    text-align: left;
    padding-left: 10%;
    margin-bottom: -4%;
}

a.no-link {
    color: white;
    text-decoration: none;
}
a:link, a:visited, a:active {
    color: white;
}

hr {
    margin: 3% 0;
    border: 0;
    height: 1px;
    background: #333;
    background-image: linear-gradient(to right, #ccc, #333, #ccc);
}

#navbar {
    overflow: hidden;
    background-color: #333;
    z-index: 2;
}
#navbar a {
    float: left;
    display: block;
    color: white;
    text-align: center;
    padding: 1.5%;
    padding-left: 2%;
    text-decoration: none;
}
#navbar a:hover {
    background-color: rgb(0, 90, 30);
    border-bottom: 4px solid rgb(0, 90, 30);
}

.sticky {
    position: fixed;
    top: 0;
    width: 100%;
}
.sticky + .content {
    padding-top: 60px;
}

.bordered {
    border-bottom: 4px solid rgb(0, 140, 50);
}
.hovered {
    background-color: rgb(0, 140, 50) !important;
    border-bottom: 4px solid rgb(0, 140, 50) !important;
}

footer {
    background: rgb(10, 10, 10);
    z-index: 1;
    display: flex;
    clear: both;
    background: linear-gradient(180deg, rgba(0,90,30,1) 0%, rgba(12,12,12,1) 50%, rgba(20,20,20,1) 100%);
}
footer div {
    padding: 5%;
}

footer div.author {
    flex: 40%;
    position: relative;
    width: 100%;
}
footer div.author img {
    border-radius: 4px;
    display: block;
    width: 75%;
    height: auto;
}
footer div.author .text {
    color: #fff;
    font-size: 22px;
    line-height: 1.5em;
    text-shadow: 2px 2px 10px #000;
    text-align: center;
    position: absolute;
    top: 60%;
    left: 40%;
    transform: translate(-50%, -50%);
    width: 100%;
}

footer div.links {
    flex: 40%;
}

/* Popup container */
.popup {
    position: relative;
    display: inline-block;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}
/* The actual popup */
.popup .popuptext {
    width: 160px;
    background-color: #333;
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 8px 0;
    position: absolute;
    z-index: 1;
    bottom: 115%;
    left: 50%;
    margin-left: -80px;
}
.popup .popuptext .exit_popup {
    position: absolute;
    top: 3px;
    right: 5px;
    cursor: pointer;
}
/* Popup arrow */
.popup .popuptext::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: #333 transparent transparent transparent;
}