* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: #68a4ff
}

.toggle-mode {
  width: 100%;
}

.button.light-mode.hidden {
  display: none;
  width: 100%;
}

.button.dark-mode {
  background-color: #000;
  width: 100%;
  border: none;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  font-size: 16px;
}

.toggle-mode {
  position: absolute;
  right: 0;
  top: 0;    
}

.clock {
  width: 350px;
  height: 350px;
  display: flex;
  justify-content: center;
  align-items: center;
  background: #fff url(../img/clock.png);
  background-size: cover;
  border-radius: 50%;
  border: 20px solid #fff;
  box-shadow: inset 0 0 30px rgba(0,0,0,.1),
              0 20px 20px rgba(0,0,0,.2),
              0 0 0 4px rgba(255,255,255,1);
}

.clock::before {
  content: "";
  position: absolute;
  width: 15px;
  height: 15px;
  background: #848484;
  border: 2px solid #fff;
  border-radius: 50%;
  z-index: 10000;
}

.clock .hour,
.clock .min,
.clock .sec {
  position: absolute;
}

.clock .hour, .hr {
  width: 160px;
  height: 160px;
}

.clock .min, .mn {
  width: 190px;
  height: 190px;
}

.clock .sec, .sc {
  width: 230px;
  height: 230px;
}

.hr, .mn, .sc {
  display: flex;
  justify-content: center;
  position: absolute;
  border-radius: 50%;;
}

.hr::before {
  content: "";
  position: absolute;
  width: 8px;
  height: 80px;
  background: #848484;
  z-index: 10;
  border-radius: 6px 6px 0 0;
}

.mn::before {
  content: "";
  position: absolute;
  width: 4px;
  height: 90px;
  background: #d6d6d6;
  z-index: 11;
  border-radius: 6px 6px 0 0;
}

.sc::before {
  content: "";
  position: absolute;
  width: 2px;
  height: 150px;
  background: #ff6767;
  z-index: 12;
  border-radius: 6px 6px 0 0;
}