:root {
  --main-bg-color: black;
  --main-font-color: aqua;
}

::-webkit-scrollbar-track {
  -webkit-box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.3);
  border-radius: 10px;
  background-color: black;
}

::-webkit-scrollbar {
  width: 7px;
  background-color: black;
}

::-webkit-scrollbar-thumb {
  border-radius: 10px;
  -webkit-box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.3);
  background-color: var(--main-font-color);
}

::-webkit-scrollbar-button {
  background-color: var(--main-font-color);
  border: 1px solid var(--main-font-color);
  border-radius: 20%;
  height: 25px;
}

html,
body {
  margin: 0;
  width: 100%;

  background-color: var(--main-bg-color);

  scrollbar-color: var(--main-font-color) black;
  scrollbar-width: thin;

  -ms-overflow-style: none;

  cursor: url("../cursors/white.cur"), auto;
}

body {
  overflow: hidden;
  min-height: 100%;
}

html {
  height: 100%;
  font-family: "Roboto";
  font-size: 62.5%;

  animation: fade-in 2s;
}

@keyframes fade-in {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

#certificate-frame {
  margin: 0;
  position: absolute;
  top: 50%;
  -ms-transform: translateY(-50%);
  transform: translateY(-50%);

  width: 100%;
  height: auto;
  max-height: 95vh;

  overflow-x: hidden;
  background-color: var(--main-bg-color);
}

#certificate-image {
  display: block;
  /* This is needed to center the image */

  width: 80%;
  height: auto;
  padding: 20px;
  margin: 0 auto;

  opacity: 1;

  border: 1px solid #e5e5e5;
  border-radius: 1em;

  transition: all 0.3s ease-in-out;
  /* this sets the transition effect */
}

#certificate-image.fading {
  opacity: 0;
  box-shadow: inset 0 0 0 25px var(--main-font-color);
  border-radius: 15%;
}

#certificate-nav {
  position: fixed;
  bottom: 15px;
  width: 100%;
  display: flex;
  justify-content: center;
  pointer-events: none;
}

#certificate-nav button {
  display: inline-block;
  padding: 0.25em 1.2em;
  border: 0.1em solid var(--main-font-color);
  margin: 0em 0.5em 0em 0.5em;
  border-radius: 1em;
  box-sizing: border-box;
  text-decoration: none;
  font-size: 1.6rem;
  color: var(--main-font-color);
  background-color: rgb(13, 14, 33);
  text-align: center;
  transition: all 0.2s;
  cursor: url("../cursors/blue.cur"), auto;
  box-shadow: 0px 0px 6px 0px var(--main-font-color);
  pointer-events: auto;
}

#certificate-nav button:hover {
  color: var(--main-bg-color);
  border-color: var(--main-font-color);
  background-color: var(--main-font-color);
  box-shadow: 0px 0px 12px 0px var(--main-font-color);
  animation: blinker 2s linear infinite;
}

#certificate-nav button:active {
  color: white;
}

#certificate-nav button:focus-visible {
  outline: 3px solid var(--main-font-color);
  outline-offset: 7px;
  box-shadow: 0 0 0 10px var(--main-bg-color);
}

#certificate-nav button[disabled] {
  opacity: 0.25;
  pointer-events: none;
}

#certificate-nav button:hover,
#certificate-nav button:focus {
  background-color: rgb(13, 14, 33);
  border-color: var(--main-font-color);
  color: var(--main-font-color);
  box-shadow: 0px 0px 6px 0px var(--main-font-color);
  cursor: default;
  cursor: url("../cursors/blue.cur"), auto;
}