*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
body{
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #7D2Ae8;
}
.wrapper{
  user-select: none;
}
.wrapper .time{
  height: 100px;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 10px;
  background: linear-gradient(45deg, #fc00ff, #00dbde);
  border-radius: 70px 45px 40px 15px/20px 20px 35px 80px;
  box-shadow: -3px -3px 150px #024f50;
}
.wrapper .time span{
  width: 100px;
  text-align: center;
  font-size: 50px;
  font-weight: 500;
  color: #333;
}
.time span.colon{
  width: 10px;
}
.time span.ms-colon,
.time span.millisecond{
  color: #7D2Ae8;
}
.wrapper .buttons{
  text-align: center;
  margin-top: 20px;
}
.buttons button{
  padding: 6px 16px;
  outline: none;
  border: none;
  margin: 0 5px;
  color: #7D2Ae8;
  background: #fff;
  font-size: 19px;
  font-weight: 500;
  border-radius: 4px;
  cursor: pointer;
  box-shadow: 10px 10px 20px rgba(0,0,0,0.09);
}
.buttons button.active,
.buttons button.stopActive{
  pointer-events: none;
  opacity: 0.7;
}