First time posting, I think. I have a commission due at 6pm today and I'm just onto the captioning stage. The last time I did a commission for these guys, they were happy with the captions looking like this (see image) where there isn't a big rectangle behind the text, and it's 'shadowed' almost. For this current commission, I can't quite figure out how I got it to appear this way when the captions where burned on.
Any help would be great! Sorry if it's a ridiculously easy thing to fix, while I have experience in premiere I really don't have experience with the captions.
Like Stan said, the most recent major version of Premiere completely overhauled the captions tools, but you can create your own style by double-clicking a caption in the Timeline and editing it (using Stan's suggestions) in the Essential Graphics panel. This panel should pop up vertically on the right side of your workspace when you double-click a caption. You can then edit the style of the one caption you have selected, then click a little arrow icon in the panel to apply the same style to all the captions on your track.