bluebox | store sensitive information such as card data

Using Row or Column widget is resulting in the following error:

I have the problem that when I build the project at my place no errors occur. However, when I do this through my configured GitHub workflow, the following error occurs:

How do I go about fixing the clearfix not working after "Bluebox", I don't want to create a new dif, I want to use :after or ::After to inject the code/clear after blue. The clear: both commands will work if I just throw it under orange box, but can I just have it happen after bluebox with no div?

I am trying to create a Sticky Header, where the Sticker Header can grow (Green Box), if user chooses more documents in left grid (not pictured).

Everything else should be push downed correspondingly (in the blue box). Not sure how to do this, since all the resources say sticky header position:fixed and body padding-top is at set amount.

Error - Right now the blue sticky header, is eating over the Green box, as more document titles are added.

There are 3 boxes below, Black is overall container, Green is top Sticky Header, and Blue is Body.

Sticky header should hold, while user scrolls down to read long body.

Alternative: Currently using Javascript below, wonder if there is way to conduct strictly with CSS, flexbox, no Js.

I'm trying to insert a blue box to the left of the "Solve 4 Success" and "Member" text. I'm trying to have them directly on top of each other, with the textbox to the left. Here is an image if my explanation is confusing. Let me know if you can help. I'm new to HTML and CSS so anything could help. Thanks

How to position my text inside div whe using z-index for overlapping.

I needed to recreate this:

I could reproduced the text part but it is positioned outside div (gray background):

How can I just move the text up?

Bonus:

How can I expand the div with red border to the left, near the text (to move up)?

Codepen:

https://codepen.io/ogonzales/pen/qBOYrQy

Code:

I am trying to use flex box in a responsive layout. For large screen sizes, I have been able to use flex. But for small screen sizes, without changing the layout, I would like it such that. 1) Block 4 is on the utmost left 2) Block 2 is on the right of Block 4 3) Block 3 and 4 are aligned underneath Block 2. Such that Block 4 has nothing below it.

My markup is as such:

I have seven checkboxes, when one is checked or unchecked I want to push the currently checked boxes into the checkedCheckboxes object. When I console.log the key/value pairs inside the if statement I get the correct output, however, when I console.log() checkedCheckboxes after the updated values have been assigned I get this (the object at the bottom of the log):

So I think there must something wrong with this line: checkedCheckboxes = {...key, ...colourCheckbox[key]};.

If anybody could tell me what, it would be a huge help.

Full code:

Im trying to make a selected item in the RecyclerView to change it's background when it is clicked, but once the other item in the RecyclerView is clicked, that item's background will be changed and the previously clicked item will change back to original.

I only manage to make the item change back to orignal(white background) when it is clicked the second time.

Any help please?

This is my RecyclerView Adapter