* {
    box-sizing: border-box;
}

/* Style the body */
body {
    font-family: Arial, Helvetica, sans-serif;
    margin: 0;
}

/* Header/logo Title */
.header-border {
    padding: 30px;
    text-align: center;
    background: #526e8d;
    color: rgb(189, 182, 182);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

/* Increase the font size of the heading */
.header-border h1 {
    font-size: 40px;
}

/* Sticky navbar - toggles between relative and fixed, depending on the scroll position. It is positioned relative until a given offset position is met in the viewport - then it "sticks" in place (like position:fixed). The sticky value is not supported in IE or Edge 15 and earlier versions. However, for these versions the navbar will inherit default position */
.navbar {
    overflow: hidden;
    background-color: #333;
    position: sticky;
    position: -webkit-sticky;
    top: 0;
}

/* Style the navigation bar links */
.navbar a {
    float: left;
    display: block;
    color: white;
    text-align: center;
    padding: 14px 20px;
    text-decoration: none;
}


/* Right-aligned link */
.navbar a.right {
    float: right;
}

/* Change color on hover */
.navbar a:hover {
    background-color: #ddd;
    color: black;
}

/* Active/current link */
.navbar a.active {
    background-color: #666;
    color: white;
}

/* Column container */
.row {
    display: -ms-flexbox;
    /* IE10 */
    display: flex;
    -ms-flex-wrap: wrap;
    /* IE10 */
    flex-wrap: wrap;
}

/* Create two unequal columns that sits next to each other */
/* Sidebar/left column */
.side {
    -ms-flex: 30%;
    /* IE10 */
    flex: 30%;
    background-color: #dad8d8;
    padding: 20px;
    color: rgb(116, 111, 111);
}

/* Main column */
.main {
    -ms-flex: 70%;
    /* IE10 */
    flex: 70%;
    background-color: rgb(87, 84, 84);
    padding: 20px;
    color: #e9e7e7;
}

/* Fake image, just for this example */
.first_row_img {
    background-color: rgb(194, 191, 191);
    width: 100%;
    padding: 20px;
}

/* Footer */
.footer {
    padding: 20px;
    text-align: center;
    background: rgb(190, 189, 189);
}

/* Responsive layout - when the screen is less than 700px wide, make the two columns stack on top of each other instead of next to each other */
@media screen and (max-width: 600px) {
    .row {
        flex-direction: column;
    }
}

/* Responsive layout - when the screen is less than 400px wide, make the navigation links stack on top of each other instead of next to each other */
@media screen and (max-width: 300px) {
    .navbar a {
        float: none;
        width: 100%;
    }
}