commonStyle.css

* {
  -ms-user-select: none;
  -moz-user-select: -moz-none;
  -webkit-user-select: none;
  -khtml-user-select: none;
  user-select: none;
  outline: 0;
  margin: 0;
  padding: 0;
  -webkit-tab-highlight-color: rgba(0, 0, 0, 0);
}

html,
body {
  width: 100%;
  height: 100%;
}
body {
  overflow: hidden;
  background-color: #161e38;
}
canvas {
  width: 100%;
  height: 100%;
}
a {
  cursor: pointer;
  color: inherit;
  text-decoration: inherit;
}
a:link,
a:visited,
a:hover {
  color: inherit;
  text-decoration: inherit;
}

.textShadow {
  text-shadow: 0 0 5px black;
}

.title {
  position: fixed;
  top: 0;
  left: 10px;
  color: white;
  font-size: 1.5rem;
}

.sign {
  position: fixed;
  bottom: 0;
  right: 2px;
  color: white;
  font-size: 0.8rem;
  cursor: pointer;
}
.sign img {
  width: 1rem;
}

.navigation {
  position: absolute;
  top: 45%;
  display: flex;
  justify-content: space-between;
  width: 100%;
  font-size: 0.8rem;
}
.navigation span {
  padding: 5px;
  cursor: pointer;
  color: white;
}
.navigation span:hover {
  background: rgba(255, 255, 255, 0.7);
  border-radius: 10px;
  color: blue;
}

.info {
  position: fixed;
  bottom: 50%;
  width: 100%;
  text-align: center;
  color: white;
  font-size: 1.5rem;
}