Theme development

In the Drupal 8 theme guide the definitions of breakpoints is quite good covered - but it seems like its lacking how to use them, or perhaps I'm looking in the wrong place.

I made a THEME.breakpoints.yml

I wasn't sure where to post this exactly, so if i have posted this in the wrong place, please tell me and let me know where i can post this.

Hi fellows
Can anybody tell me what is the name of template that crackberry.com is using? And a link of that template will be appreciated.
Thanks in advance.

Hello,
I got this custom MD Official Drupal 7 theme. When I enable Them Developer, my site breaks down and gives the dreaded WSOD. Tracing the error leads to my template.php file. Anyone used this theme or do you have an idea on how to narrow down on the issue? I have read quite a number of similar problems but yet to figure it out. Thanks in advance.

The error is caused by this code on line 595. I tried to put some debug code above but no luck.

Hi everyone,

My name is Jon and I just started working for a nonprofit called Dialysis Patient Citizens. I am the person mainly responsible for our websites, for which we use Drupal. We currently link to many PDFs on our websites, and I am working on turning them all into pages on our websites. I am having some issues, mainly with text formatting, such as:

Hi, I have created a content type which has a list of taxonomy terms associated with it. When adding a node of this content type I have a field where its term ref is selected. I'd like the title and sub-title of a page of this content type have particular colour according to its taxonomy term. What is the best approach for this?

Thanks in advance