html { 
    margin: 0;
    padding: 0;
}
body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    min-height: 100vh;
    color: black;
    background-image: 
        url('../images/MapCrest.png'),
        url('../images/MapCrest.png');
    background-size: 160px 160px;
    background-position: 
        center,
        calc(50% + 80px) calc(50% + 69.28px);
    background-repeat: repeat;
    background-color: #f4f4f4;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

header {
    background-color: rgba(255, 255, 255, 0.75);
    padding: 1rem;
    text-align: center;
    border-bottom: 2px solid #000000;
    margin-bottom: 1rem;
}

header h1 {
    font-size: 2.5rem;
    margin: 0;
    padding: 0;
}

.main-content {
    margin: 0 auto;
    flex-grow: 1;
}

.nav-group {
    background-color: rgba(255,255,255,0.9);
    background-blend-mode: lighten;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    border: 2px solid #000000;
    border-radius: 1rem;
}

.nav-group .nav-group__title {
    background-color: rgba(255, 255, 255, 0.75);
    text-align: center;
    border-top-left-radius: 1rem;
    border-top-right-radius: 1rem;
    border-bottom: 1px solid #000;
}

.nav-group .nav-group__title h2 {
    margin: 0;
    padding: 1rem 0.5rem;
}

.nav-group__image {
    background-blend-mode: initial;
    display: flex;
    width: 100%;
    height: 100%;
}

.nav-group__image img {
    max-width: 100%;
    max-height: 100%;
}

.nav-group .nav-group__content {
    font-size: 1rem;
    text-align: justify;
}

.nav-group .nav-group__content table {
    margin: 0 auto;
    border-collapse: collapse;
}

.nav-group .nav-group__content table td {
    border: 1px solid #000;
    text-align: center;
    vertical-align: middle;
    font-size: 1rem;
    white-space: normal;
    overflow-wrap: break-word;
    padding: 0.25em;
    font-size: 0.75rem;
}

.nav-group .nav-group__content a {
    display: block;
    width: 75%;
    padding: 1rem;
    text-decoration: none;
    border-radius: 1rem;
    text-align: center;
    margin: 0.5rem auto;
    font-size: 1rem;
    border: 1px solid #000000;
    line-height: 1.5rem;
    color: #000;
    background-color: rgba(255, 255, 255, 0.75);
}

.nav-group .nav-group__content a:hover, .nav-group .nav-group__content a:focus {
    background-color: rgba(240, 240, 240, 0.6);
    outline: 2px solid #000000;
}

.content-notes {
    border: 2px solid #000;
    border-radius: 8px;
    padding: 0;
    background-color: #ffffff;
}

.content-notes .content-notes__title {
    text-align: center;
    border-bottom: 1px solid #000;
    margin: 0;
    padding: 0;
}

.content-notes .content-notes__content {
    padding: 1rem;
}

footer {
    background-color: rgba(255, 255, 255, 0.75);
    padding: 0.6rem;
    text-align: center;
    font-size: 1.2rem;
    border-top: 2px solid #000000;
    width: 100%;
    box-sizing: border-box;
}

footer a {
    text-decoration: none;
    margin: 0 0.5em;
}
footer a:hover, footer a:focus {
    color: black;
} 

.home-button {
    position: absolute;
    top: 1rem;
    left: 1rem;
    width: 3rem;
    height: 3rem;
    background-image: url('../images/home.jpg');
    background-size: cover;
    background-position: center;
    border: 2px solid black;
    border-radius: 5px;
    cursor: pointer;
    padding: 0;
    overflow: hidden;
}
.home-button:hover {
    opacity: 0.8;
}
.home-button:hover::after {
    content: "HOME";
    font-size: 0.75rem;
    color: white;
    background-color: rgba(0, 0, 0, 0.5);
    padding: 2px 4px;
}