Frontend Output of Heading Font Small – How to Adjust CSS on Front-end?

Hello there,

When the shortcode [jobs] output on my frontend, the H2 heading (the heading font of the title of the job) is very slow. I’ve tried to find the CSS code for this to overide and make the size bigger, but it’s not working. For example, my theme H3 heading is 40px, but on the fronend of the jobs page it shows tiny, like 10px. How do I fix this?