#tool-area {
  padding: 24px 0;
}
#start {
  background-color: black;
  width: 100%;
  height: 600px;
  font-size: 5rem;
  font-weight: bold;
  color: yellow;
  text-align: center;
  line-height: 600px;
}
#result {
  padding: 64px;
  display: none;
  background-color: black;
  width: 100%;
  height: 600px;
  font-size: 1.2rem;
  font-weight: bold;
  color: white;
  text-align: center;
}
#result .average {
  margin-top: 36px;
  font-size: 1.8rem;
}
#result .retry {
  margin-top: 150px;
}
#screen {
  display: none;
  position: relative;
  background-color: black;
  width: 100%;
  height: 600px;
}
#circle {
  background-color: darkred;
  position: absolute;
  width: 200px;
  height: 200px;
  top: 200px;
  left: 200px;
  border-radius: 100px;
}
#screen p {
  text-align: center;
  position: absolute;
  width: 100%;
  color: white;
  font-weight: bold;
}
#message {
  top:130px;
  font-size: 1.4rem;
}
#seconds {
  top:440px;
  font-size: 1.8rem;
}
#error {
  display: none;
  top:270px;
  font-size: 2rem;
}