html,
body {
  margin: 0;
  padding: 0;
  overflow: hidden;
}

a {
  color: greenyellow;
}

a:visited {
  color: cyan;
}

.curtain {
  position: fixed;
  z-index: 1;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0,0,0,0.5);
  font-size: 18px;
  font-weight: bold;
}

.pause-container {
  display: flex;
  flex-direction: row;
  align-content: space-around;
  justify-content: center;
  height: 100%;
}

.pause-box {
  background-color: black;
  color: white;
  text-align: center;
  margin: auto;
  padding: 0 1rem;
  display: block;
  border: solid 4px black;
}