div.schedule_day {
    height: <?= $whole_height ?>px;
}

div.schedule_marker {
    height: <?= floor($entry_height / 2)  ?>px;
    line-height: <?= floor($entry_height / 2) ?>px;
    margin-bottom: <?= floor($entry_height / 2) ?>px;
}

div.schedule_hours {
    height: <?= $entry_height ?>px;
}