The Myriad template uses the full page always by design. But if you want to change it you can use this custom CSS...
div#rt-slideshow, div#rt-slideshow .sprocket-features-img-list {
max-height: 70vh !important;
}
70vh means 70% of the viewport height.
This is how to create a custom CSS compatible with Gantry 4...
Simply create a file called "<TEMPLATENAME>-custom.css" and put this file in the CSS folder of the template (where <TEMPLATENAME> is the name of the template as seen in template manager e.g. rt_iridescent would be rt_iridescent-custom.css). GANTRY4 will automatically load this CSS file. If you wish, you can also have browser specific files by appending, for example, "-ie9" making the filename "<TEMPLATENAME>-custom-ie9.css"
Regards, Mark.
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