DayBack Behaviors, Hacks, and Extensions

Search our actions and extensions library for more options to customize your calendar

A few examples of how you can change the font size of any on-screen element.
Colors, Styles and Icons

How to Change Text Size

You can copy and paste these examples into the CSS and Styles section of DayBack Admin section. See this overview of how to change DayBack CSS and Styles.

How can I make changes to just the “Dark Mode” theme?

Preface your CSS classes with “.theme-dark” as in this change to the font size of an event:

.theme-dark .fc-event {
    font-size: 1em;

How can I increase the font size for events so they are easier to read?

Add the following lines. The first changes all the views except horizon; the second class changes the horizon view:

.fc-event {
    font-size: 1em;
.nub-content {
    font-size: 15px;


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