Prioritizing mobile for your website is incredibly important, and that includes content!
Start by making sure your website is mobile friendly, then focus on the content. Titles and media descriptions are important and remember that users will be tapping instead of clicking.
As for the content itself Blog Brandz said, "Although you need to keep it short and concise, you still have to make sure that your written content reaches 300 words so that Google’s bots can crawl your page."
Are you ready for mobile?