h1, h2, h3, h4 {
    background-color: #1E64C8;
    color: white;
}

h1:hover, h2:hover, h3:hover, h4:hover {
    background-color:#8BBEE8
}

header {
    margin-left: 40px;
    margin-right: 40px;
}

mark {
    background-color: #FFD200;
}

table img {
    height: 150px;
}

.product-cel {
    padding: 10px;
    text-align: center;
}

header figure img {
    height: 100px;
}

header figure {
    float: right;
    text-align: center;
    margin-top: 40px;
}

main {
    clear: both;
}

table td, table th {
    border: 4px double black;
    text-align: center;
    padding: 15px;
}

table {
    text-align: center;
}

table {
    margin: 50px auto;
    border-collapse: collapse;
}

ul {
    list-style-type: square;
}

main footer {
    font-size: small;
    margin-bottom: 20px;
}

iframe {
    width: 100%;
    height: 152px;
    border-radius: 15px;
}

div > footer {
    margin-top: 20px;
    font-weight: bold;
    font-variant: small-caps;
    text-align: center;
}

form fieldset {
    border: 2px solid #FFD200;
    padding: 20px;
}

legend {
    color: #1E64C8;
}

.knoppen {
    margin: 0% 20%;
}

#verzendknop {
    height: 45px;
    padding: 5px;
}

textarea {
    width: 100%;
}

.nav-link i {
    margin-right: 8px;

}