Blog when displayed is not formatted like in WYSIWYG editor - too much white space

Take my blog post as an example [1]. There is a lot of white space. Before the transition there was not so much white space. When I try to edit out the white space in the WYSIWYG editor, the white space is collapsed, the text looks different. It is not, then, a WYSIWYG editor, but a 'what-you-see-is-/not/-what-you-get' editor.

Please fix either the editor or the display mode, to bring the looks closer.

[1] https://blogs.sap.com/2016/08/10/step-by-step-end-to-end-guide-to-building-a-barcode-scanner-hybrid-kapsel-app-for-android/