You can arrange content into columns and rows by dragging blocks and following guidelines to assist with placement. Adding blocks with Insert Points. Since Text Blocks often merge when stacked, you can use a Line or Spacer Block to divide text and prevent merging. Squarespace actually has a guide to create columns and rows. You can check Does anyone know how to break text up into two columns?. Squarespace's templates help you create a cohesive look and structure for your website. Every Squarespace trial starts by selecting a template, which you can change at any time. You'll use your template's Site Styles to adjust fonts, colors, spacing, and other design features.
If your image is set to the Inline layout, and you want to add alt text but not display a caption: Ensure the caption is set to Caption Below.