:root {
    --ugent-blue: #1E64C8;
    --ugent-yellow: #FFD200;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    background-color: var(--ugent-blue);
    color: white;
}

h1:hover,
h2:hover,
h3:hover {
    background-color: var(--ugent-yellow);
    color: black;
}

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

mark {
    background-color: var(--ugent-yellow);
}

table img {
    height: 150px;
}

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

header img {
    height: 100px;
}

header figure {
    float: right;
    text-align: center;
}

main {
    clear: both;
}

table,
th,
td {
    border: double 4px black;
}

table {
    border-collapse: collapse;
    margin-left: auto;
    margin-right: auto;
}

ul {
    list-style-type: square;
}

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

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

body>footer {
    margin-top: 20px;
    font-weight: bold;
    font-variant: small-caps;
}

fieldset {
    border: 2px solid var(--ugent-yellow);
    padding: 20px;
}

legend {
    color: var(--ugent-blue);
}

.knop-spacing {
    margin-left: 20%;
    margin-right: 20%;
}

#submit-knop {
    height: 45px;
    padding: 5px;
}

textarea {
    width: 100%;
}