Management WebUI: Adjust margins and colors

Spec: http://gallery/projects/MCHbtQVoQ2HCZeF2TRDfZn42/files/MCEJu8Y2hyDScRPwT3b-ptxnA1Voh9SSNJc
Visual (After): http://screen/2ZAz4M3VaY9
Visual (Before): http://screen/JWzT9qrjKcd

Bug: 932810
Change-Id: I20d7952b9738d08e2f6bc483ca7484fb8ca0be5a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1579523
Commit-Queue: Yann Dago <ydago@chromium.org>
Reviewed-by: Hector Carmona <hcarmona@chromium.org>
Cr-Commit-Position: refs/heads/master@{#653996}
1 file changed