.bold {
  font-weight: bold;
}

nav, .scroll-container {
  display: block;
  padding: 0 50px 0 50px;
  margin: 0 -30px 0 -30px;
  text-align: center;
}

.scroll-container {
  max-width: 500px;
  height: 50vh;
  overflow-y: hidden;
  scroll-behavior: smooth;
}

.scroll-page {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  font-size: 5em;
}

.wave {
  background-image: url("../images/blob-scene-haikei green 3l.svg");
  opacity: 1;
  background-size: cover;
  background-position: right;
}

.button-group {
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
  margin: 0 0 10px 0;
}

.button {
  position: relative;
  color: white;
  margin: 12px 12px 4px 0px;
  padding: 8px;
  border-radius: 4px;
  width: fit-content;
  width: -moz-fit-content;
  text-decoration: none;
  transition: 0.3s;
}

.question-mark {
  display: inline-block;
  width: 20px;
  height: auto;
  font-weight: bold;
  /*background-color: #99eb97;*/
  background-color: dodgerblue;
  border-radius: 6px;
  text-align: center;
  color: white;
  user-select: none;
  -webkit-user-select: none;
}
.line-mark {
/*  bottom: 18%;
  left: 29%;
  font-size: 1vw;*/
  position: absolute;
  width: 114px;
  padding: 10px 2px;
  border: hsl(0deg 0% 54% / 35%) 3px;
  border-style: none none dashed none;
  color: blue;
  text-align: center;
}

.main-button {
  filter: drop-shadow(0px 8px 10px hsl(213deg 100% 40% / 0.3));
  transition: 0.3s;
  will-change: transform;
  user-select: none;
  -webkit-user-select: none;
}

.main-button:hover {
  filter: drop-shadow(0px 12px 20px hsl(213deg 100% 50% / 0.8));
  transform: scale(1.05);
  transition: 0.3s;
}

.monkey {
  visibility: hidden;
  position: absolute;
  background-color: gray;
  bottom: 40px;
  /*left: calc(50% - 30px);*/
  width: 100%;
  height: auto;
  box-shadow: 0px 3px 10px 0px hsl(215deg 26% 29% / 40%);
  padding: 8px;
  border-radius: 6px;
  font-size: 1rem;
  line-height: 1.5;
  color: white;
  opacity: 0;
  transition: 0.2s;
}
@media (max-width: 500px) {
  .monkey {
    left: 0;
  }
}

.question-mark:hover + .monkey,
.question-mark:focus + .monkey {
  visibility: visible;
  opacity: 1;
  transition: 0.2s;
}


.lightred {
  background-color: lightsalmon;;
}
.lightred:hover {
  box-shadow: 0px 8px 10px -4px hsl(17deg 100% 40% / 0.5);
  transition: 0.3s;
}

.green {
  background-color: yellowgreen;
}
.green:hover {
  box-shadow: 0px 8px 10px -4px hsl(213deg 100% 40% / 0.5);
  transition: 0.3s;
}

.lightblue {
  color: darkslategray;
  background-color: #e3f0ff;
}

.gray {
  background-color: #5d6778;
}

.blue {
  background-color: hsl(211deg 100% 60%);
}

.gray:hover, .lightblue:hover, .blue:hover {
  box-shadow: 0px 8px 10px -4px hsl(213deg 100% 40% / 0.5);
  transition: 0.3s;
}


.button.desktop-only:after {
  position: absolute;
  content: "WebGL";
  top: -10px;
  right: -10px;
  font-size: 10px;
  color: white;
  background: darkslategray;
  border-radius: 4px;
  padding: 3px;
  font-weight: normal;
}

.flex-word {
  width: auto;
  max-width: 600px;
  color: hsl(180deg 25% 20%);
  font-family: var(--font-int); sans-serif;
  font-size: 1.3rem;
}

.video-box {
  max-width: min(700px, 100%);
  max-height: 400px;
  -webkit-box-shadow: 0px 25px 50px -20px #4682b4c4;
  box-shadow: 0px 25px 50px -20px #4682b4c4;
}

/*.v-line {
  width: 8px;
  margin: 0 12px 0 0px;
  min-height: 120px;
  max-height: 120px;
  background-color: dodgerblue;
  position: absolute; z-index: -1; top: 0; left: 50%; bottom: 0;
}

#second.v-line {
  margin: 0 0px 0 12px;
}*/