body {
    display: table-cell;
    text-align: center;
    background-color: #efefef;
    font-size: 14px;
    font-family: Tahoma;
    margin-top: 0px;
    margin-bottom: 4px;
    padding-bottom: 10px;
    color: #4a4a4a;
    padding-top: 20px;
}

td {
    vertical-align: text-top;
}

select {
    font-size: 14px;
    font-family: Tahoma;
    color: #000000;
}

input {
    font-size: 14px;
    font-family: Tahoma;
    color: #000000;
}

.verplicht {
    color: red;
}

.button {
    background-color: #355e74;
    color: #ffffff;
    font-size: 18px;
    border-radius: 3px;
    border-color: #355e74;
    cursor: pointer;
}

.blink {
    z-index: 40;
    animation: blink-animation .7s steps(5, start) infinite;
    -webkit-animation: blink-animation .7s steps(5, start) infinite;
}

@keyframes blink-animation {
    to {
        visibility: hidden;
    }
}

@-webkit-keyframes blink-animation {
    to {
        visibility: hidden;
    }
}