body {
    font-family: arial, verdana, sans-serif;}
  header {
    display: block;
    margin: 0px auto 0px 550px;}
  h3 {
    text-align: center;}
  a {
    text-decoration: none;
    color: black;
    font-weight: bold; }

/* Navbar container */

/* Add a background color to the top navigation */
.navbar {
  text-align: center;
  overflow: hidden;
  background-color: #ECECEC;
  font-family: Arial;
  border: 1px solid #000000;
  padding: 14px 16px;
}

/* Style the links inside the navbar */
.navbar a {
  float: left;
  display: block;
  font-size: 16px;
  color: black;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

/* Hide the link that should open and close the navbar on small screens */
.navbar .icon {
  display: none;
}

/* The dropdown container - needed to position the dropdown content */
.dropdown {
  float: left; 
  overflow: hidden; 
}

/* Style the dropdown button to fit inside the navbar */
.dropdown .dropbtn {
  font-size: 16px;  
  border: none;
  outline: none;
  color: black;
  padding: 14px 16px;
  background-color: inherit;
  font-family: inherit;
  /* text-align: center; */
  margin: 0;
  font-weight: bold;
}

/* Style the dropdown content (hidden by default) */
.dropdown-content {
  display: none;
  position: absolute;
  background-color: #f9f9f9;
  min-width: 50px;
  box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
  z-index: 1;
}

/* Style the links inside the dropdown */
.dropdown-content a {
  float: none;
  color: black;
  padding: 12px 16px;
  text-decoration: none;
  display: block;
  text-align: left;
}

.dropdown-content a:hover {
  background-color: #ddd;
}

.dropdown:hover .dropdown-content {
  display: block;
}

/* When the screen is less than 600 pixels wide, hide all links, except for the first one ("Home"). Show the link that contains should open and close the navbar (.icon) */
@media screen and (max-width: 600px) {
  .navbar a:not(:first-child), .dropdown .dropbtn {
    display: none;
  }
  .navbar a.icon {
    float: right;
    display: block;
  }
}

/* The "responsive" class is added to the navbar with JavaScript when the user clicks on the icon. This class makes the navbar look good on small screens (display the links vertically instead of horizontally) */
@media screen and (max-width: 600px) {
  .navbar.responsive {position: relative;}
  .navbar.responsive a.icon {
    position: absolute;
    right: 0;
    top: 0;
  }
  .navbar.responsive a {
    float: none;
    display: block;
    text-align: left;
  }
  .navbar.responsive .dropdown {float: none;}
  .navbar.responsive .dropdown-content {position: relative;}
  .navbar.responsive .dropdown .dropbtn {
    display: block;
    width: 100%;
    text-align: left;
  }
}

.normaal {
  font-weight: normal;
}

table.rand {
    display: block;
    float: left;
    width: 880px;  /* was 53% */
    margin-left: 100px;} 
  table.rand {
    border: 1px solid #000000;
    border-collapse: collapse;}
  td {
    padding: 7px 10px 10px 10px;
    font-size: 15px;
    border: 1px solid #000000;
    border-collapse: collapse;}
  td.randrechts {
    border-right: 5px solid #000000;
  }
  /*td.geenrand {
    border-right: 1px solid #ffffff;
  } */
  thead, tbody {
    display:block;}
  thead { 
    position:sticky;
    top: 0;
    z-index: 1;} /* Keep it on top of other rows */
  tbody {
    overflow-y: auto;
    max-height: 700px;}
  .rand {
    border: 1px solid #000000;
    border-collapse: collapse;}
  .geenrand {
    border: 0px solid #ffffff;}
  .wit {
    background-color: #ffffff;}
  .rood {
    color: red;}
  .grijs {
    background-color: gray;}
  #wijz {
    float: left;
    margin-left: 30px;}