Hi @muffinous
You should use the Boxed layout:
https://smartslider.helpscoutdocs.com/article/1775-boxed-layout
and put the slider into a container, that’s 80% wide.
If you use a page builder, probably it has an option for creating a section/row that’s 80% wide. Then just put the slider into that section/row.
If you use the PHP publishing method, you could try:
<div style="width: 80%;margin: auto;">
<?php echo do_shortcode('[smartslider3 slider="1"]'); ?>
</div>
just make sure you use your slider’s PHP code instead of
<?php echo do_shortcode('[smartslider3 slider="1"]'); ?>
Or if you meant 80% height, then I’m sorry but that’s not possible in the Free version. You’ll need the Full page layout for that:
https://smartslider.helpscoutdocs.com/article/1777-fullpage-layout
which is a Pro only feature.
If you have the Pro version, or have presales questions about it, please contact us at:
https://smartslider3.com/contact-us/support/
As per forum rules, commercial products are not supported in these forums. This includes any presales questions as well.