/* Enter Your Custom CSS Here */
input[type=text], select {
    background-image: url("http://www.jtsbouwentimmerwerken.nl/wp-content/uploads/2018/04/wit.jpg");
    width: 100%;
    padding: 12px 20px;
    margin: 8px 0;
    display: inline-block;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}

input[type=email], select {
    background-image: url("http://www.jtsbouwentimmerwerken.nl/wp-content/uploads/2018/04/wit.jpg");
    width: 100%;
    padding: 12px 20px;
    margin: 8px 0;
    display: inline-block;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
}

textarea {
  background-image: url("http://www.jtsbouwentimmerwerken.nl/wp-content/uploads/2018/04/wit.jpg");
  width: 100%;
  height: auto;
}

input[type=submit] {
    width: 100%;
    background-color: #1e73be;
    color: white;
    padding: 14px 20px;
    margin: 8px 0;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

input[type=submit]:hover {
    background-color: #7bafe0;
}

#center {
  margin-left: 30px;  
} 
.onzichtbaar {
  display: block;  
}