@charset "utf-8";

body {
    font-family: Verdana, Geneva, sans-serif;
    background-color: ivory;
    color: rgb(91, 91, 91);
}

header {
    text-align: center;
    padding: 0;
}

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

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

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
}
nav li {
    width: 20%;
    float: left;
}

nav a {
    display: block;
    background-color: rgb(128, 180, 180);
    line-height: 2.8em;
    text-decoration: none;
    text-align: center;
    color: white;
}

    nav a:hover {
        background-color: rgb(64, 140, 140);
        color: black;
    }

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

    main > img {
        width: 25%;
        float: right;
        margin: 10px;
    }

.clear {
    clear: both;
}

.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
    margin-top: 15px;
}

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

body > footer {
    clear: both;
    background-color: rgb(128, 180, 180);
    color: white;
    font-weight: bold;
    font-size: 0.9em;
    line-height: 3em;
    text-align: center;
    padding: 10px;
}

.table-wrap {
    overflow-x: auto;
}

.family-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
    background-color: white;
}

.family-table caption {
    font-weight: bold;
    padding: 10px 0;
}

.family-table th,
.family-table td {
    border: 2px solid rgb(128, 180, 180);
    padding: 10px;
    text-align: left;
}

.family-table thead {
    background-color: rgb(128, 180, 180);
    color: white;
}

.family-table tfoot {
    background-color: rgb(231, 231, 231);
    font-weight: bold;
}

input:focus, select:focus, textarea:focus {
    background-color: rgb(255, 255, 200);
    outline: 2px solid rgb(64, 140, 140);
}

input:required:valid,
select:required:valid,
textarea:required:valid {
    border: 2px solid green;
}

input:required:invalid,
select:required:invalid,
textarea:required:invalid {
    border: 2px solid red;
}

@media only screen and (max-width: 768px) {

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

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

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

    main > img {
        width: 90%;
        float: none;
        margin: 10px auto;
        display: block;
    }

    .family-table thead {
        display: none;
    }

    .family-table,
    .family-table tbody,
    .family-table tr,
    .family-table td {
        display: block;
        width: 100%;
    }

        .family-table tr {
            margin-bottom: 12px;
            border: 2px solid rgb(128, 180, 180);
            background-color: white;
        }

        .family-table td {
            border: none;
            border-bottom: 1px solid rgb(231, 231, 231);
            padding: 10px;
        }

        .family-table td::before {
            content: attr(data-label) ": ";
            font-weight: bold;
            display: inline-block;
            width: 45%;
            }

    form {
        width: 100%;
        font-size: large;
    }

    fieldset {
        width: 100%;
        padding: 5px;
        margin: 0;
    }

    input, select, textarea {
        position: inherit;
        display: block;
        height: 50px;
        padding: 5px;
        width: 90%;
        margin-bottom: 10px;
    }

    label {
        position: inherit;
        display: block;
        height: 50px;
        width: 90%;
        padding: 5px;
    }

    input[type="submit"],
    input[type="reset"] {
        float: none;
        width: 90%;
        margin: 10px;
        font-size: 1.2em;
    }
}

@media only screen and (min-width: 769px) {

    body {
        margin: 0;
        width: 90%;
        margin-left: auto;
        margin-right: auto;
    }

    nav li {
        float: left;
        width: 20%;
    }

    form {
        width: 90%;
    }

    fieldset {
        width: 90%;
        padding: 5px;
        margin-right: 10px;
        margin-bottom: 10px;
        position: relative;
    }

    input, select, textarea {
        display: block;
        position: relative;
        left: 30%;
        padding: 5px;
        width: 60%;
        margin-bottom: 10px;
        box-sizing: border-box;
    }

    label {
        display: block;
        position: absolute;
        padding: 5px;
        width: 30%;
    }

    input[type="radio"] {
        display: inline;
        position: inherit;
        left: 0;
        width: auto;
    }

    label.radio {
        display: inline;
        position: inherit;
        width: auto;
    }

    input[type="submit"],
    input[type="reset"] {
        display: block;
        float: left;
        left: 0;
        width: 40%;
        padding: 10px;
        margin-left: 5%;
        margin-right: 5%;
        margin-bottom: 10px;
        box-sizing: border-box;
    }
}