Hello,

The only ways could be either via Custom CSS or via Custom Chart callbacks.

To start with, I went to your Page, and here is some CSS code you can use :

1. For the first GeoChart, I am not sure if that H2 text is just from the Page or from the Chart, but here is a selector you can do to manipulate its font size :

#av-tab-section-1 > div > div.av-tab-section-inner-container.avia-section-no-padding > div.av-layout-tab.av-animation-delay-container.av-active-tab-content.__av_init_open.avia-builder-el-9.el_before_av_tab_sub_section.avia-builder-el-first > div > div > div > section:nth-child(1) > div > h2 {
    font-size: 15px !important;
}

2. For the HighCharts Title :

text.highcharts-title {
    font-size: 12px !important;
}

There are two ways how you can implement this CSS, either on the Page directly or via our Plugin's settings.

1. In our Plugin, you can use the code in Main settings/Custom js and CSS/Custom CSS;

2. Or directly to the Page :

Custom code needs to be applied to the page where the booking form is. Depending on what you're using (Gutenberg blocks, or some page builder), adding the CSS or JS can be done in a few different ways. 

If you need help with adding custom CSS to the page, please take a look at this article.

I hope that helps.

Hello,

No problem, thank you for clarifying about that H2 title, so it was not related to the Charts.

I am glad to see that CSS helps to achieve a different font size for the HighChart titles, great.

Thank you for letting us know.

 Anything else that we could assist with, please don't hesitate to create new tickets.

Have a great day!