/* Sets the box-sizing of ALL elements to a border-box 
   (includes padding and border width in the total width). */
* {
    box-sizing: border-box;
}

/* Removes the default margins on the body tag 
   (allows you to use the full width and height of the page). */
body {
    margin: 0;
}



/* Styles the navigation bar. */
ul.navBar {
    list-style-type: none;
    margin: 0;
    padding: 0;
    background-color: #f1f1f1;
    position: fixed;
    height: 100%;
    width: 25%; /* 25% of the page */
    top: 0;
}

ul.navBar li a {
    display: block;
    color: #000000;
    padding: 8px 16px;
    text-decoration: none;
}

ul.navBar li a.active {
    background-color: #4CAF50;
    color: white;
}

ul.navBar li a:hover {
    background-color: #555000;
    color: white;
}



/* Properly positions the container division block */
div.container {
    position: relative;
    width: 75%;
    left: 25%;
}



/* Styles the header. */
div.header {
    background-color: grey;
    padding: 15px;
    text-align: center;
    color: white;
}



/* Styles the content. */
div.content {
    padding: 1px 16px;
}

div.content h2 {
    text-align: center;
}

div.content img.float {
    width: 33%;
    float: left;
    padding: 5px;
}

div#images:after {
    content: "";
    clear: both;
    display: table;
}

div.content div#imageContainer img#city {
    width: 100%;
    height: 300px;
    opacity: 0.3;
}

div.content div#imageContainer div#centerText {
    position: relative;
    top: -150px;
    width: 100%;
    text-align: center;
    font-size: 18px;
}




/* Styles the footer. */
div.footer {
    background-color: grey;
    padding: 15px;
    text-align: center;
    color: white;
}