Fix security packages update

Author: pavelthq

.gitignore

@@ -1,2 +1,4 @@
 .idea/
-node_modules/
+node_modules/
+package-lock.json
+yarn.lock

Gruntfile.js

@@ -1,12 +1,5 @@
 module.exports = function( grunt ) {
 	var globalOptions = {
-		browsers: [
-			'> 1%',
-			'last 3 versions',
-			'ie 9',
-			'ie 10',
-			'ie 11'
-		],
 		less: {
 			srcPath: 'less/',
 			srcFiles: [
@@ -107,7 +100,7 @@ module.exports = function( grunt ) {
 				options: {
 					map: false,
 					processors: [
-						require( 'autoprefixer' )( { browsers: globalOptions.browsers } )
+						require( 'autoprefixer' )()
 					]
 				},
 				files: [
@@ -146,7 +139,7 @@ module.exports = function( grunt ) {
 			lib: {
 				options: {
 					processors: [
-						require( 'autoprefixer' )( { browsers: globalOptions.browsers } )
+						require( 'autoprefixer' )()
 					],
 					map: false
 				}

css/style.css

@@ -1477,7 +1477,7 @@ h6 {
   padding-left: 16px;
 }
 #footer {
-  background-color: #333333;
+  background-color: hsl(0, 0%, 20%);
   color: #777;
   font-size: 14px;
   line-height: 1.7;
@@ -1528,7 +1528,7 @@ h6 {
   margin-bottom: 10px;
 }
 .footer-widget-area {
-  background-color: #383838;
+  background-color: hsl(0, 0%, 22%);
   padding: 45px 0 15px 0;
 }
 .footer-widget-area .widget {