.container {
  display: flex;
  justify-content: space-between;
}
#ball {
  border: 2px solid #f2efef;
  width: 100px;
  height: 100px;
  border-radius: 50%;
}

#leftBox {
  border: 2px solid #f2efef;
  width: 150px;
  height: 150px;
  margin-top: 200px;
  display: flex;
  justify-content: center;
  align-items: center;
}

#centerBox {
  border: 2px solid #f2efef;
  width: 100px;
  height: 100px;
}

#rightBox {
  border: 2px solid #f2efef;
  width: 150px;
  height: 150px;
  margin-top: 200px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.container2 {
  display: flex;
  justify-content: space-around;
  align-items: center;
}
#timer,
#score {
  border: 2px solid #f2efef;
  width: 100px;
  height: 100px;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 20px;
}
#timer{
  animation: flash 1s;
  animation-iteration-count: infinite;
}
@keyframes flash{
  from{
    color: black;
  }
  to{
    color: red;
  }
}

#restartBTN {
  width: 100px;
  height: 50px;
}