What steps will reproduce the problem?
1. Go to "Add an event"
2. Click "Create"
3. Get error message

What is the expected output? What do you see instead?
1. The error message at the top should styled distinctly, like having a red
border and a faint red background under the text to make it clear that you
got an error.
2. The individual input fields containing errors, if they're produced by
Rails, will have a CSS class added that marks them as such. The fields with
errors should be styled distinctly , like having a red border around the
text input fields that shows that they need attention.