Fixed styles for unsupported browser page

.gitignore

 deploy-local.sh
 libs/
 all.css
+*css.map
+unsupported_browser.css
 .remote-sync.json

Makefile

 EXORCIST = ./node_modules/.bin/exorcist
 CLEANCSS = ./node_modules/.bin/cleancss
 STYLES_MAIN = css/main.scss
+STYLES_UNSUPPORTED_BROWSER = css/unsupported_browser.scss
 STYLES_BUNDLE = css/all.bundle.css
 STYLES_DESTINATION = css/all.css
 DEPLOY_DIR = libs
 	$(LIBJITSIMEET_DIR)/lib-jitsi-meet.js.map \
 	$(LIBJITSIMEET_DIR)/connection_optimization/external_connect.js \
 	$(DEPLOY_DIR)
+
 deploy-css:
+	$(NODE_SASS) css/unsupported_browser.scss css/unsupported_browser.css ; \
 	$(NODE_SASS) $(STYLES_MAIN) $(STYLES_BUNDLE) && \
 	$(CLEANCSS) $(STYLES_BUNDLE) > $(STYLES_DESTINATION) ; \
 	rm $(STYLES_BUNDLE)

css/_unsupported_browser.scss → css/unsupported_browser.scss

+@import 'variables';
+
 body {
     width:100%;
     height:100%;

package.json

   "browserify": {
     "transform": [
       "browserify-shim",
+      "browserify-css",
       [
         "babelify",
         {