How to show items expanded if they take part all day?

I have items that take part all day and those that have particular time of the day. And I have additional information inside of them. But this information can be seen only if the item is not all day. If it is all day - it is shown collapsed. I tried to change the parameter

.calendar-calendar .month-view .full tr.date-box,
.calendar-calendar .month-view .full tr.date-box td,
.calendar-calendar .month-view .full tr.multi-day,
.calendar-calendar .month-view .full tr.multi-day td {
height: 19px;
max-height: 19px;
}

in calendar_multiday.css

but it just added a margin. But the box stayed same.

How can I show additional information inside all day events?