Slider logoBrowser Info Environment
Are there any built-in options for aligning the text?
This theme doesn't provide a slider at all within the theme, nor an overlay for a slider.
You may find there is an addon in the marketplace that offers something like this. I just did a quick look and for example, there is this onehttp://www.concrete5.org/marketplace/addons/slider-overlay/... I am sure there are probably others if you look under addons choose "Image Sliders". Alternatively, try asking the community by posting on the forum - someone may know of a good addon you could use.
In terms of text alignments, the theme doesn't really have anything specific for text alignment, but I'm not sure if you are familiar with concrete5 dashboard. In the content editor you can see from this image there are buttons for text alignmenthttp://www.concrete5.org/documentation/using-concrete5/in-page-edit... . In addition, the theme uses bootstrap, which has various classes like:
Example of usage
<p class="text-right">I am right aligned text.</p>
If you can't find what you're after in add-ons, you may need to code your own. I just did a quick google and found some links that might help you: