slide block

slide.html.slim

li class="#{@block.settings[:class]}"
  - unless @block.settings[:text].blank?
    .slide-copy
      p == @block.settings[:text]
      a class="btn btn-#{@block.settings[:button_color]}" href="#{@block.settings[:link_url]}"
        = @block.settings[:link_text]
  - if @block.block_cover
    = image_tag(@block.block_cover.url, alt: @block.name)

and then don't forget to edit Slide in content.yml