Savia features a number of customizable buttons. Use the "Add a Button Link" button from your editor's kitchen sink to add the button shortcode to your page/post.
By default it looks like this:
This is where button customization starts – you can pass a URL link to the "href" param, you can also pass "_blank" to the "target" parameter and for the "css_classes" parameter you have quite a few options, where you can combine them, some are for size, some for text-style, some for colors:
First off pick the icon you want to use (Features->Entypo Icons page in the Demo), then create your button and after setting all your parameters the way you want them add the "Icon" shortcode to it's text by leaving just the icon parameter in like so:
So the end result would be something like this:
18 באפריל 2018
1 בינואר 2018