@charset "utf-8";

/* Styles for all screen sizes */

html {
    background-color: hsl(200, 20%, 47%);
}

body {
    background-color: #F1F8E9;
    color: #1B1B1B;
    font-family: Verdana, Geneva, sans-serif;
}

header {
    text-align: center;
}

header img {
    display: block;
    width: 100%;
    height: auto;
}

h1,
h2 {
    text-shadow: 4px 6px 5px gray;
}

h2 {
    font-size: 1.3em;
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

nav a {
    display: block;
    background-color: #2E7D32;
    color: white;
    line-height: 2.8em;
    text-align: center;
    text-decoration: none;
}

nav a:hover {
    background-color: #C8E6C9;
    color: #1B3A1B;
}

/* Hide the navicon on larger screens */
a#navicon {
    display: none;
}

main {
    padding: 20px;
    margin-top: 35px;
}

footer {
    clear: both;
    background-color: #2E7D32;
    color: white;
    padding: 10px;
    text-align: center;
}

footer a {
    color: white;
}

/* Flex gallery */
div.gallery {
    display: flex;
    flex-flow: row wrap;
}

div.imgGallery {
    box-sizing: border-box;
    padding: 4px;
}

div.imgGallery img {
    display: block;
    width: 100%;
    height: auto;
}

/* Styles for devices 768 pixels wide or smaller */
@media only screen and (max-width: 768px) {

    body {
        width: 100%;
        margin: 0;
    }

    /* Display the hamburger navicon on mobile devices */
    a#navicon {
        display: block;
        font-size: 2em;
        border-bottom: none;
    }

    /* Hide the menu until the navicon is used */
    nav ul {
        display: none;
    }

    a#navicon:hover + ul,
    nav ul:hover {
        display: block;
    }

    nav li {
        float: none;
        font-size: x-large;
        width: 100%;
    }

    nav a {
        border-bottom: 1px solid black;
    }

    a#navicon {
        border-bottom: none;
    }

    main > img {
        display: block;
        float: none;
        width: 90%;
        margin: auto;
    }

    /* Two-column gallery */
    div.imgGallery {
        width: 50%
    }
}

/* One-column gallery on smaller mobile screens */
@media only screen and (max-width: 480px) {

    div.imgGallery {
        width: 100%;
    }
}

/* Styles for devices 769 pixels wide or larger */
@media only screen and (min-width: 769px) {

    html {
        background: hsl(200, 20%, 47%) url("back_pic.jpg") center / cover no-repeat fixed;
    }

    body {
        width: 90%;
        margin: auto;
    }

    nav ul {
        display: flex;
    }

    nav li {
        width: 20%;
    }

    main > img {
        float: right;
        width: 25%;
        padding: 25px;
    }

    /* Four-column gallery */
    div.imgGallery {
        width: 25%;
    }
}