.game {
  margin-bottom: 2em;
}

.game_infos {
  display: flex;
  justify-content: space-between;
  margin-bottom: 20px;
}

.game_container {
  height: 400px;
  width: 400px;
  border: 1px solid #dcdcdc;
  cursor: crosshair;
  position: relative;
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #fff;
  border-radius: 10px;
  overflow: hidden;
}

#target {
  height: 60px;
  width: 60px;
  position: absolute;
  transition: 0.25s;
  animation: animateTarget 10s infinite;
}

button.start_btn {
  padding: 10px 20px;
  margin-bottom: 20px;
  background-color: #b7b9a6;
  border: 0;
  color: #fff;
  border-radius: 10px;
  cursor: pointer;
}

@keyframes animateTarget {
  to {
    transform: translateY(-200px);
  }
}