html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  background: linear-gradient(to right bottom, #7d7d7d, #070707);
}

li {
  list-style: none;
  height: 30px;
  width: 30px;
  margin: 0;
  padding: 0;
  font-size: 22ox;
  line-height: 30px;
  color: #bbbbbb;
}

.container {
  width: 100%;
  position: fixed;
  top: 50%;
  left: 50%;
  z-index: 4;
  transform: translate(-50%, -50%);
}

.clock {
  display: flex;
  flex-direction: row;
  justify-content: space-around;
  align-items: center;
  width: 500px;
  height: 30px;
  margin: 50% auto;
  background-color: #3b3b3b;
  box-shadow: 2px 2px 10px 3px #2f2f2f;
  transform: translateY(-50%);
  border-radius: 20px;
}

.time-box {
  width: 30px;
  height: 100%;
}

.numbers {
  background-color: #272727;
  box-shadow: 2px 2px 10px 3px #2f2f2f;
  text-align: center;
  border-radius: 10px;
  transition: all 0.5s;
}