html, body {
    margin: 0;
    padding: 0;
    max-width: 100%;
    overflow-x: hidden;
    font-family: Arial, Helvetica, sans-serif;
    color: #222;
    background: #fff;
}

.bildtafel-app {
    max-width: 660px;
    margin: 0;
    padding: 0;
}

.bildtafel-app h2 {
    margin: 0 0 10px;
    font-size: 18px;
    line-height: 1.3;
}

.bildtafel-form {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    margin-bottom: 10px;
}

.bildtafel-form select,
.bildtafel-form button,
.bildtafel-form input[type="submit"] {
    font: 14px Arial, Helvetica, sans-serif;
    padding: 5px 7px;
}

.bildtafel-frame {
    display: block;
    width: 100%;
    max-width: 640px;
    height: 920px;
    border: 0;
    overflow: auto;
}

.bildtafel-message {
    max-width: 600px;
    padding: 14px;
    margin: 10px 0;
    border: 1px solid #ccc;
    border-radius: 6px;
    background: #f7f7f7;
    font-size: 14px;
}

img[usemap] {
    max-width: 100%;
    height: auto;
}

a {
    color: #900;
    text-decoration: none;
}

a:hover,
a:focus {
    color: #c00;
    text-decoration: underline;
}