:root {
  font-family: Verdana, Geneva, Tahoma, sans-serif;
  font-size: 16px;
  line-height: 24px;
  font-weight: 400;
  color: #0f0f0f98;
  background-color: #2f2f2f;

  height: 100%;
  display: flex;
  justify-content: center;

  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-text-size-adjust: 100%;
}

.container {
  display: block;
  justify-content: center;
  margin: 0;
  padding: 10vh;
}

button {
  cursor: pointer;
  vertical-align: middle;
  text-align: center;
  border-radius: 8px;
  border: 1px solid transparent;
}

.upper-menu{
  display: flex;
  justify-content: left;
}

.game{
  display: flex;
  justify-content: center;
}

.button-reset {
  height: 50px;
  width: 100px;
  margin: 2px;
  font-size: 25px;
  background-color: #0f0f0f98;
  color: #ffffff;
  transition: background-color 0.5s;
  -webkit-transition: background-color 0.5s;
}

.button-reset:hover {
  background-color: #262626;
  transition: background-color 0.5s;
  -webkit-transition: background-color 0.5s;
}

.button-hidden {
  font-size: 25px;
  color: rgba(15, 15, 15, 0.0);
  background-color: #0f0f0f98;
  box-shadow: 0 2px 2px rgba(0, 0, 0, 0.2);
  height: 50px;
  width: 50px;
  margin: 2px;
  transition: background-color 0.5s;
  -webkit-transition: background-color 0.5s;
}

.button-shown {
  font-size: 25px;
  font-weight: 700;
  color: #0f0f0f98;
  background-color: #2f2f2f;
  height: 50px;
  width: 50px;
  margin: 2px;
}

.button-hidden:hover {
  background-color: #262626;
  transition: background-color 0.5s;
  -webkit-transition: background-color 0.5s;
}


.button-hidden:active {
  background-color: #2f2f2f;
  transition: background-color 0.5s;
  -webkit-transition: background-color 0.5s;
}

.button-shown:active {
  background-color: #2f2f2f;
  transition: background-color 0.5s;
  -webkit-transition: background-color 0.5s;
}

input,
button {
  outline: none;
}