body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
}

/* ************************************************** */
/* navigation */

.topimg {
    z-index: 9;
    box-sizing: content-box;
    overflow: hidden;
    background-color: #777;
    position: fixed;
    top: 0;
    padding: 9px;
}
.topnav {
    z-index: 9;
    overflow: hidden;
    background-color: #777;
    position: fixed;
    top: 0;
    left: 140px;
    width: calc(100% - 140px);
}

.topnav a {
    float: left;
    display: block;
    color: #f2f2f2;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
    font-size: 17px;
}

.topnav a:hover {
    background-color: #ddd;
    color: black;
}

.topnav a.active {
    background-color: #00ADEF;
    color: white;
}

.topnav .icon {
    display: none;
}

.main {
    padding: 15px;
    margin-top: 48px;
    margin-bottom: 48px;
}

@media screen and (max-width: 665px) {
    .topnav a:not(:first-child) {
        display: none;
    }

    .topnav a.icon {
        float: right;
        display: block;
    }
}

@media screen and (max-width: 665px) {
    .topnav.responsive {
        position: relative;
    }

    .topnav.responsive .icon {
        position: absolute;
        right: 0;
        top: 0;
    }

    .topnav.responsive a {
        float: none;
        display: block;
        text-align: left;
    }
}

/* ************************************************** */
/* welcome image and text */

.imagecontainer {
    margin-top: 48px;
    margin-bottom: 48px;
    width: 100vw;
    height: calc(100vh - 96px);
    background: url(img/Welcome.jpg);
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
}

.text-block {
    position: absolute;
    left: 20px;
    bottom: 100px;
    background: rgb(0, 0, 0); /* Fallback color */
    background: rgba(0, 0, 0, 0.5); /* Black background with 0.5 opacity */
    color: #f1f1f1; /* Grey text */
    padding-left: 20px;
    padding-right: 20px;
}

/* ************************************************** */
/* tabs */

/* Style the tab */
.tab {
    overflow: hidden;
    border: 1px solid #ccc;
    background-color: #f1f1f1;
}

/* Style the buttons that are used to open the tab content */
.tab button {
    background-color: inherit;
    float: left;
    border: none;
    outline: none;
    cursor: pointer;
    padding: 14px 16px;
    transition: 0.3s;
}

/* Change background color of buttons on hover */
.tab button:hover {
    background-color: #ddd;
}

/* Create an active/current tablink class */
.tab button.active {
    background-color: #ccc;
}

/* Style the tab content */
.tabcontent {
    display: none;
    padding: 6px 12px;
    border: 1px solid #ccc;
    border-top: none;
}

/* ************************************************** */
/* timeline */

* {
    box-sizing: border-box;
}

/* The actual timeline (the vertical ruler) */
.timeline {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
}

/* The actual timeline (the vertical ruler) */
.timeline::after {
    content: '';
    position: absolute;
    width: 6px;
    background-color: #e9e9e9;
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -3px;
}

/* Container around content */
.container {
    padding: 10px 40px;
    position: relative;
    background-color: inherit;
    width: 50%;
}

/* The circles on the timeline */
    .container::after {
        content: '';
        position: absolute;
        width: 25px;
        height: 25px;
        right: -17px;
        background-color: #e9e9e9;
        border: 4px solid #00ADEF;
        top: 15px;
        border-radius: 50%;
        z-index: 1;
    }

/* Place the container to the left */
.left {
    left: 0;
}

/* Place the container to the right */
.right {
    left: 50%;
}

/* Add arrows to the left container (pointing right) */
.left::before {
    content: " ";
    height: 0;
    position: absolute;
    top: 22px;
    width: 0;
    z-index: 1;
    right: 30px;
    border: medium solid #e9e9e9;
    border-width: 10px 0 10px 10px;
    border-color: transparent transparent transparent #e9e9e9;
}

/* Add arrows to the right container (pointing left) */
.right::before {
    content: " ";
    height: 0;
    position: absolute;
    top: 22px;
    width: 0;
    z-index: 1;
    left: 30px;
    border: medium solid #e9e9e9;
    border-width: 10px 10px 10px 0;
    border-color: transparent #e9e9e9 transparent transparent;
}

/* Fix the circle for containers on the right side */
.right::after {
    left: -16px;
}

/* The actual content */
.content {
    padding: 20px 30px;
    background-color: #e9e9e9;
    position: relative;
    border-radius: 6px;
}

/* Media queries - Responsive timeline on screens less than 600px wide */
@media screen and (max-width: 600px) {
    /* Place the timelime to the left */
    .timeline::after {
        left: 31px;
    }

    /* Full-width containers */
    .container {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
    }

        /* Make sure that all arrows are pointing leftwards */
        .container::before {
            left: 60px;
            border: medium solid white;
            border-width: 10px 10px 10px 0;
            border-color: transparent white transparent transparent;
        }

    /* Make sure all circles are at the same spot */
    .left::after, .right::after {
        left: 15px;
    }

    /* Make all right containers behave like the left ones */
    .right {
        left: 0%;
    }
}

/* ************************************************** */
/* zoom image */

.click-zoom input[type=checkbox] {
    display: none;
}

.click-zoom label {
    position: relative;
    z-index: 9;
}

.click-zoom img {
    transition: transform 0.25s ease;
    cursor: zoom-in;
}

.click-zoom input[type=checkbox]:checked ~ img {
    transform: scale(3);
    cursor: zoom-out;
}

/* ************************************************** */
/* footer */

.footer {
    z-index: 9;
    position: fixed;
    left: 0;
    bottom: 0;
    width: 100%;
    background-color: #777;
    color: white;
    text-align: center;
}

.footer a {
    float: left;
    display: block;
    color: #f2f2f2;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
    font-size: 17px;
}

.footer a:hover {
    background-color: #ddd;
    color: black;
}

.footer a.active {
    background-color: #00ADEF;
    color: white;
}