#paginamasker {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  background: #00000066;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  backdrop-filter: blur(10px);
}
#dialoogvenster {
  position: relative;
  box-sizing: border-box;
  background: #ffffff;
  padding: 24px;
  width: min(700px, 100% - 64px);
  min-height: 150px;
  max-height: calc(100vh - 64px);
  overflow: auto;
  -webkit-overflow-scrolling: touch;
  border: 5px solid #3489d2;
}
#dialoogvenster h2 {
  margin-top: 0;
}
#dialoogvenster a.sluiten {
  position: absolute;
  top: 10px;
  right: 10px;
  color: #000000;
  text-decoration: none;
  font-family: 'Open Sans', verdana, sans-serif;
  font-weight: 700;
  font-size: 18px;
  line-height: 18px;
}
@media (max-width: 480px) { /* MINIMAAL */
  #dialoogvenster {
    padding: 15px;
    width: 100%;
    margin-inline: 10px;
/*
    min-height: calc(100vh - 20px);
*/
  }
}
@media (min-width: 481px) and (max-width: 768px) { /* MOBIEL */
  #dialoogvenster {
    padding: 20px;
/*
    min-height: calc(100vh - 40px);
    width: min(700px, 100% - 40px);
*/
  }
}
@media (min-width: 769px) and (max-width: 1280px) { /* BREDER */
}
@media (min-width: 1281px) { /* BREEDST */
}