wekan/client/components/cards/cardTime.css

.card-time {
  display: block;
  border-radius: 4px;
  padding: 1px 3px;
  color: #fff;
  background-color: #dbdbdb;
}
.card-time:hover,
.card-time.is-active {
  background-color: #b3b3b3;
}
.card-time time::before {
  font: normal normal normal 14px/1 FontAwesome;
  font-size: inherit;
  -webkit-font-smoothing: antialiased;
  content: "\f017";
  margin-right: 0.3em;
}