To develop websites I use domino designer v9.01 with OpenNTF Bootstrap extension library v14. I am new to IBM domino so have mercy … The trouble I have is : While previewing XPage apps in Notes all controls, views etc. are there and looks as expected. But when I preview same XPage apps in a web browser (newest FireFox, newest Microsoft Edge) I get messy results. To be more specific, the amount of controls, views, etc. are there and they also work. But their expected design is messy. I cannot describe it better because I have never seen such pages before.
Finally the question is : Why is the presentation of XPage apps in Notes perfect while in a web browser not ?
UPDATE
Here are 2 screenshots to visualize the problem. First screenshot is from Notes showing expected UI. Second screenshot is from FireFox browser showing non-expected UI which i call "messy". The content you see is a simple example from a tutorial. So do not wonder about that.