Dear 100 Hour Board,
What's the best design/format for your CV? Resume?
-My Name Here
I would recommend something that isn't just black and white. Something that stands out a little, but isn't too crazy. There are plenty of sample resumes out there. Here are some by BYU Career Services. Personally, I just went with one of the formats from Microsoft Office and it's worked fine for me. Also, if you're submitting a printed resume I would recommend using a thicker card stock so it's a bit heavier and physically stands out from other resumes.
BUT, having a polished resume is far more important than the style of resume. BYU Career Services has a bunch of great tips on how to write a good resume. Your resume needs to not only look nice, but highlight your relevant experiences and abilities. I would recommend revising your resume multiple times so that you can find the best way to represent your skills and iron out all the typo/formatting errors. BYU career services offers resume advisement sessions and I highly recommend them. I've gone multiple times and they've helped me a bunch.
My other recommendation is writing a solid short cover letter. You could have this in the body of an email, as an attachment, or an actual piece of paper. Read the job requirements carefully and write 1-2 paragraphs about how you fit those requirements and would work in the company culture. I have a good resume, but at job fairs employers get hundreds of resumes. When I've asked for their email to send them my resume electronically, I've been able to include a cover letter and have gotten interviews most of the time. Hope this helps and good luck with the job search!
This is just a small tip, but use two different fonts for your resume: one for headings, the other for body. Also make sure to liberally sprinkle your resume with target words for whatever field you're interested in.