body {
  margin: 40px; }

h1 {
  font-size: 200%; }

day {
  background-color: green;
  color: #fff;
  border-radius: 5px;
  padding: 10px;
  box-shadow: inset 0 0 2px #fed8b1; }

minute {
  background-color: #444;
  color: #fff;
  border-radius: 1mm;
  padding: 3mm; }

.this_minute {
  background-color: #ccc;
  color: #000;
  animation: fadeIn 1s infinite alternate; }

.passed {
  background-color: orange; }

.time {
  font-weight: bold; }

clockbox {
  width: 204mm;
  display: grid;
  grid-gap: 1mm;
  grid-template-columns: repeat(30, 6mm); }

@keyframes fadeIn {
  from {
    opacity: 0; } }