Email container un-responsive when window resized

Hoping someone can help me solve this.

Was working on the sub-footer section of my email template and when I went to resize the window to check the changes, the row appeared to leak out of the container to the right side. Everything has been responsive up to this point. In fact, the actual content inside of the container does not leak out.

note: Each template section has a tag (header, body). No issues until i began working on the sub-footer section. The dark block is the leaked/unresponsive portion.

Thanks in advance for your help!