ese-website/_includes/program.css

.program-date ul {
  padding: 0;
}

.timeslot {
  display: block;
  border-bottom: 1px solid rgba(0,0,0,.05);
}

.timeslot h3 {
  margin: 0;
  font-size: 1.3em;
  font-weight: 400;
}

.timeslot h3 .icon {
  vertical-align: -0.125em;
  margin-right: 2px;
}

.timeslot-container {
  position: relative;
  padding-top: 40px;
}

.timeslot-time {
  position: absolute;
  top: 0;
  height: 40px;
}

.timeslot-time :is(.start, .end) {
  display: none;
}

.timeslot-time .full {
  font-size: 26px;
}

.timeslot .icon {
  height: 1.1em;
  vertical-align: text-bottom;
  fill: currentColor;
}

.annotation {
  background-color: rgba(255, 139, 0, 0.06);
  border: 1px solid #ff8b00;
  border-radius: 3px;
  width: fit-content;
  padding: .5em 1em;
  font-weight: 500;
}

.annotation .icon {
  color: #ff8b00;
  margin-right: .5em;
}

.location .icon {
  margin-right: .2em;
}

@media (width < 640px) {
  .timeslot {
    margin-bottom: 2.5rem;
  }
}

@media (width >= 640px) {
  .timeslot:last-child {
    border-bottom: none;
  }

  .timeslot-container {
    padding: 2rem 3rem;
    margin-left: 14rem;
  }

  .timeslot-time {
    height: auto;
    width: 14rem;
    left: -14rem;
    text-align: right;
    padding: 2rem 3rem;
  }

  .timeslot-time .start {
    display: block;
    font-size: 38px;
  }

  .timeslot-time .end {
    display: block;
    font-size: 21px;
  }

  .timeslot-time .full {
    display: none;
  }
}