body {
    font-family: Arial, sans-serif;
    background-color: white;
    color: darkgray;
    margin: 0;
    padding: 0;
}

header {
    background-color: darkblue;
    padding: 10px 20px;
    overflow: hidden;
}

header .logo {
    color: white;
    font-size: 22px;
    font-weight: bold;
    float: left;
}

nav {
    float: right;
    margin-top: 6px;
}

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

nav ul li {
    display: inline;
    margin-left: 15px;
}

nav ul li a {
    color: white;
    text-decoration: none;
    font-size: 14px;
}

nav ul li a:hover {
    text-decoration: underline;
}

.banner-ding {
    background-image: url('../jimmyrock.png');
    background-size: cover;
    background-position: center;
    min-height: 300px;

    background-color: blue;
    color: white;
    padding: 30px 20px;
    text-align: center;
    
}

.banner-ding h1 {
    margin: 0 0 10px 0;
    font-size: 26px;
}

.banner-ding p {
    margin: 0 0 15px 0;
}

.content {
    max-width: 900px;
    margin: 20px auto;
    padding: 0 20px;
}

h2 {
    color: blue;
    border-bottom: 2px solid blue;
    padding-bottom: 5px;
}

.drie-dinges {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-top: 20px;
}

.een-van-drie {
    background-color: white;
    border: 1px solid beige;
    padding: 15px;
}

.een-van-drie h3 {
    margin-top: 0;
    color: blue;
}

.rekening-geheel {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 20px;
}

.een-van-rekeningen {
    flex: 1 1 250px;
    background-color: white;
    border: 1px solid black;
    padding: 15px;
}

.een-van-rekeningen h3 {
    margin-top: 0;
    color: blue;
}

.een-van-rekeningen ul {
    padding-left: 18px;
}

.een-van-rekeningen ul li {
    margin-bottom: 4px;
    font-size: 14px;
}


.form-wrapper {
    background-color: white;
    border: 1px solid black;
    padding: 20px;
    max-width: 500px;
}

fieldset {
    border: 1px solid black;
    margin-bottom: 15px;
    padding: 12px;
}

legend {
    font-weight: bold;
    color: blue;
}

label {
    display: block;
    margin-bottom: 3px;
    font-size: 14px;
    font-weight: bold;
}


.btn {
    background-color: blue;
    color: white;
    border: none;
    padding: 8px 18px;
    cursor: pointer;
    font-size: 14px;
    margin-right: 8px;
    text-decoration: none; 
    display: inline-block;
}

.foutmelding {
    color: red;
    font-size: 13px;
    margin-bottom: 8px;
}

.succesmelding {

    padding: 10px;
    margin-bottom: 15px;
}

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

table th {
    background-color: blue;
    color: white;
    padding: 8px 10px;
    text-align: left;
    font-size: 14px;
}

table td {
    padding: 8px 10px;
    border-bottom: 1px solid #ddd;
    font-size: 14px;
}

table tr:nth-child(even) {
    background-color: white;
}

footer {
    background-color: darkblue;
    color: white;
    text-align: center;
    padding: 15px;
    margin-top: 40px;
    font-size: 13px;
}