TYPO3 7.6 bootstrap package - how to change footer height? - typo3

we are using TYPO3 7.6 bootstrap package and want to change the footer height.
Can you help?
In template - constants we found no option to change this.
regards
leo

You can adjust the output inside your own CSS file. You can include that directly with typoscript
https://docs.typo3.org/typo3cms/TyposcriptReference/Setup/Page/Index.html#includecss-array

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After typo3 update - text does not wrap around image, images are not displayed in columns

After the typo3 update to version 8.7 I am having an issue with images.
First text is no longer wraping around images although the alignment for the image is set to wrap around the text. See here: http://www.vbl.org
Second images are no longer displayed in columns, although number of columns is set to 5. See here: http://www.vbl.org/berichte/bildberichte-2018/halbziit-2-juni-2018.html
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css styles content
My users used a lot of those margins in 6.2 LTS
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I think you can
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modify the templates or partials of the Fluid Styled Content elements to use the new fields.
I don't know if this scenario has hidden drawbacks that I currently don't see.
Another scenario could be to use the CSS Styled Content also on version 7 and plan a migration to version 8 or 9 where they're used again, but the fields have become dropdown lists; plus, even the field names in database have changed: in version 6.2 they were spaceBefore and spaceAfter while since 8.7 they're called space_before_class and space_after_class.
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Changing the width and position of a picture has absolute no effect.
what could be the problem in this case?
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you might need to evaluate those setings in the templates / partials for your CEs (Content elements).
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add on:
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