* {
  margin: 0;
  padding: 0;
}

.game_area {
  display: none;
}

header {
  width: 100%;
  text-align: center;
  height: 98px;
  border-bottom: dashed 2px black;
}

.pong_area {
  width: 100%;
  cursor: none;
}

.paddle1 {
  position: absolute;
  top: calc(50% - 50px);
  left: calc(100% - 10px);
  width: 10px;
  height: 100px;
  background-color: black;
  border-bottom-right-radius: 5px;
  border-top-right-radius: 5px;
}

.paddle2 {
  position: absolute;
  top: calc(50% - 50px);
  right: calc(100% - 10px);
  width: 10px;
  height: 100px;
  background-color: black;
  border-bottom-left-radius: 5px;
  border-top-left-radius: 5px;
}

.ball {
  position: absolute;
  top: calc(50% - 5px);
  width: 10px;
  height: 10px;
  border-radius: 45px;
  background-color: black;
  left: calc(50% - 5px);
}

.start {
  position: absolute;
  height: 50px;
  width: 200px;
  top: calc(50% - 25px);
  left: calc(50% - 100px);
  color: #021927;
  background-color: #82A6B1;
  border: none;
  border-radius: 10px;
  cursor: pointer;
}

.bot {
  position: absolute;
  color: #82A6B1;
  border-radius: 10px;
  border: solid 3px #82A6B1;
  background-color: white;
  width: 400px;
  height: 50px;
  text-align: center;
  top: calc(50% - 100px);
  left: calc(50% - 203px);
}

.gravity {
  position: absolute;
  top: calc(50% - 150px);
  left: calc(50% - 34.4px);
}

input[type="checkbox"] {
  margin-right: 10px;
}