Web Inspector: styles sidebar rendering is broken

Web Inspector: styles sidebar rendering is broken
https://bugs.webkit.org/show_bug.cgi?id=76065

Reviewed by Pavel Feldman.

Source/WebCore:

* inspector/front-end/StylesSidebarPane.js:
(WebInspector.StylePropertiesSection):
* inspector/front-end/elementsPanel.css:
(.styles-section .header .subtitle):
(.styles-section .properties):

LayoutTests:

* http/tests/inspector/elements-test.js:
(initialize_ElementTest.InspectorTest.dumpSelectedElementStyles): Fix dump output due to DOM changes.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@105070 268f45cc-cd09-0410-ab3c-d52691b4dbfc