* {
  box-sizing: border-box;
  text-align: center;
}

body {
  overflow: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6,
p,
table {
  font-family: "Arial", sans-serif;
}

p {
  color: black;
  left: 0;
  font-size: 20px;
  padding: 10px;
  z-index: 10;
}

a,
a:hover {
  text-decoration: none;
}

#main_container {
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  height: 100%;
  width: 100%;

  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-color: black;
  overflow-x: hidden;
  overflow-y: auto;
}

.logo_top {
  height: 50px;
  margin: auto;
  margin-top: 10px;
  z-index: 9;
}
.logo_left_bottom {
  width: 30%;
  margin: auto;
  position: absolute;
  bottom: 1%;
  left: 1%;
  z-index: 9;
}

#overlay {
  display: block;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: black;
  opacity: 1;
  transition: all 3s;
}

#images,
#navigation,
#mainMenu,
#dwr_mainMenu {
  display: none;
}

#orchestra,
#strings,
#woodwinds,
#brass,
#percussion,
#conductor,
#eindtekst {
  display: none;
}

#intro_frankenstein,
#intro_zwanenmeer,
#intro_pluk_van_de_petteflet,
#crafting,
#crafting_zwanenmeer,
#liedjes,
#song {
  display: none;
}

.outline {
  filter: brightness(75%);
  transition: all 1s;
}
.outline:hover {
  filter: brightness(125%);
  -ms-transform: scale(1.1, 1.1); /* IE 9 */
  -webkit-transform: scale(1.1, 1.1); /* Safari */
  transform: scale(1.1, 1.1);
  transition: all 1s;
  cursor: pointer;
}

#soundOnOff {
  position: absolute;
  left: 1%;
  top: 1%;
  width: 60px;
  height: 60px;
  line-height: 53px;
  text-align: center;
  border: 3px solid white;
  border-radius: 50%;
  outline: none;
  font-size: 25px;
  color: white;
  z-index: 9;
}
#soundOnOff:hover,
#soundOnOff:hover {
  background-color: white;
  color: black;
}

#mainMenu {
  text-align: center;
  position: absolute;
  width: 30%;
}
#mainMenu .menuBtn {
  position: relative;
  outline: none;
  overflow: hidden;
  width: 400px;
  height: 120px;
  border: 3px solid white;
  margin: 5px;
}
#mainMenu .menuBtn:hover {
  background-color: white;
  border-color: #d0135f;
  color: #d0135f;
  cursor: pointer;
}
#mainMenu .menuBtn:active {
  background-color: lightblue;
}
#mainMenu .btnTxt {
  position: absolute;
  top: 10px;
  left: 0;
  width: 100%;
  height: 100px;
  z-index: 1;
  text-align: left;
}
#mainMenu .jn-btn-img {
  position: absolute;
  bottom: 0;
  right: 0;
  height: 100%;
  max-width: 100%;
  z-index: 0;
  /*opacity: 0.5;*/
}

#to_mainmenu,
#to_schoolMenu {
  display: none;
  font-family: "Arial", sans-serif;
  background-color: transparent;
  color: white;
  position: fixed;
  right: 25px;
  top: 25px;
  padding: 10px 20px;
  border: none;
  outline: none;
  font-size: 15px;
  z-index: 10;
}
#to_mainmenu:hover,
#to_schoolMenu:hover {
  background-color: white;
  color: black;
}

/* Youtube */
.videoWrapper {
  width: 65%;
  height: 65%;
  position: absolute;
  bottom: 12.5%;
  left: 7.5%;
  padding-bottom: 16.25%; /* 16:9 */
  padding-top: 25px;
  z-index: 2;
}
.videoWrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  padding: 30px;
  background-color: white;
}

.videoThumbs {
  position: absolute;
  right: 5%;
  bottom: 12.5%;
  width: 20%;
  height: 65%;
}

.videoThumbs img {
  height: 150px;
  width: 250px;
  margin-top: 15px;
  border: 10px solid white;
  display: block;
  cursor: pointer;
  float: right;
}

/* COMPLEET PROGRAMMA */
#previous {
  font-family: "Arial", sans-serif;
  background-color: transparent;
  color: white;
  position: fixed;
  left: 25px;
  bottom: 25px;
  height: 30px;
  padding: 0 10px;
  border: none;
  outline: none;
  font-size: 15px;
  z-index: 10;
}
#previous:hover {
  background-color: white;
  color: black;
}
#instruction {
  font-family: "Arial", sans-serif;
  color: white;
  position: fixed;
  left: 12.5%;
  bottom: 1.25%;
  width: 75%;
  font-size: 17.5px;
  line-height: 110%;
}
#next {
  font-family: "Arial", sans-serif;
  background-color: transparent;
  color: white;
  position: fixed;
  right: 25px;
  bottom: 25px;
  height: 30px;
  padding: 0 10px;
  border: none;
  outline: none;
  font-size: 15px;
  z-index: 10;
}
#next:hover {
  background-color: white;
  color: black;
}

#images {
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  padding: 0;
  overflow: auto;
}

#afbeelding {
  position: absolute;
  top: 110px;
  bottom: 60px;
  left: 0;
  right: 0;
  max-width: 100%;
  max-height: 100%;
  margin: auto;
  overflow: auto;
}

/* EINDTEKST */
#eindtekst {
  position: absolute;
  width: 70%;
  text-align: center;
  font-family: "Arial", sans-serif;
  font-size: 25px;
  color: white;
}