added autoprefixer @postcss

package.json

@@ -36,6 +36,7 @@
     "@babel/preset-flow": "^7.0.0",
     "flow-bin": "^0.109.0",
     "gulp": "^4.0.2",
+    "gulp-autoprefixer": "^7.0.1",
     "gulp-babel": "^8.0.0",
     "gulp-csso": "^3.0.1",
     "gulp-rename": "^1.4.0",

yarn.lock

@@ -1392,6 +1392,19 @@ atob@^2.1.1:
   resolved "https://registry.yarnpkg.com/atob/-/atob-2.1.2.tgz#6d9517eb9e030d2436666651e86bd9f6f13533c9"
   integrity sha512-Wm6ukoaOGJi/73p/cl2GvLjTI5JM1k/O14isD73YML8StrH/7/lRFgmg8nICZgD3bZZvjwCGxtMOD3wWNAu8cg==
 
+autoprefixer@^9.6.1:
+  version "9.6.4"
+  resolved "https://registry.yarnpkg.com/autoprefixer/-/autoprefixer-9.6.4.tgz#e6453be47af316b2923eaeaed87860f52ad4b7eb"
+  integrity sha512-Koz2cJU9dKOxG8P1f8uVaBntOv9lP4yz9ffWvWaicv9gHBPhpQB22nGijwd8gqW9CNT+UdkbQOQNLVI8jN1ZfQ==
+  dependencies:
+    browserslist "^4.7.0"
+    caniuse-lite "^1.0.30000998"
+    chalk "^2.4.2"
+    normalize-range "^0.1.2"
+    num2fraction "^1.2.2"
+    postcss "^7.0.18"
+    postcss-value-parser "^4.0.2"
+
 aws-sign2@~0.7.0:
   version "0.7.0"
   resolved "https://registry.yarnpkg.com/aws-sign2/-/aws-sign2-0.7.0.tgz#b46e890934a9591f2d2f6f86d7e6a9f1b3fe76a8"
@@ -1624,7 +1637,7 @@ browserify-zlib@^0.2.0:
   dependencies:
     pako "~1.0.5"
 
-browserslist@^4.6.0, browserslist@^4.6.6:
+browserslist@^4.6.0, browserslist@^4.6.6, browserslist@^4.7.0:
   version "4.7.0"
   resolved "https://registry.yarnpkg.com/browserslist/-/browserslist-4.7.0.tgz#9ee89225ffc07db03409f2fee524dc8227458a17"
   integrity sha512-9rGNDtnj+HaahxiVV38Gn8n8Lr8REKsel68v1sPFfIGEK6uSXTY3h9acgiT1dZVtOOUtifo/Dn8daDQ5dUgVsA==
@@ -1733,7 +1746,7 @@ camelcase@^5.0.0, camelcase@^5.3.1:
   resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-5.3.1.tgz#e3c9b31569e106811df242f715725a1f4c494320"
   integrity sha512-L28STB170nwWS63UjtlEOE3dldQApaJXZkOI1uMFfzf3rRuPegHaHesyee+YxQ+W6SvRDQV6UrdOdRiR153wJg==
 
-caniuse-lite@^1.0.30000989:
+caniuse-lite@^1.0.30000989, caniuse-lite@^1.0.30000998:
   version "1.0.30000999"
   resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30000999.tgz#427253a69ad7bea4aa8d8345687b8eec51ca0e43"
   integrity sha512-1CUyKyecPeksKwXZvYw0tEoaMCo/RwBlXmEtN5vVnabvO0KPd9RQLcaAuR9/1F+KDMv6esmOFWlsXuzDk+8rxg==
@@ -3004,6 +3017,18 @@ growly@^1.3.0:
   resolved "https://registry.yarnpkg.com/growly/-/growly-1.3.0.tgz#f10748cbe76af964b7c96c93c6bcc28af120c081"
   integrity sha1-8QdIy+dq+WS3yWyTxrzCivEgwIE=
 
+gulp-autoprefixer@^7.0.1:
+  version "7.0.1"
+  resolved "https://registry.yarnpkg.com/gulp-autoprefixer/-/gulp-autoprefixer-7.0.1.tgz#3c0dc26afc802d317e7560a7f760a0399049075a"
+  integrity sha512-QJGEmHw+bEt7FSqvmbAUTxbCuNLJYx4sz3ox9WouYqT/7j5FH5CQ8ZnpL1M7H5npX1bUJa7lUVY1w20jXxhOxg==
+  dependencies:
+    autoprefixer "^9.6.1"
+    fancy-log "^1.3.2"
+    plugin-error "^1.0.1"
+    postcss "^7.0.17"
+    through2 "^3.0.1"
+    vinyl-sourcemaps-apply "^0.2.1"
+
 gulp-babel@^8.0.0:
   version "8.0.0"
   resolved "https://registry.yarnpkg.com/gulp-babel/-/gulp-babel-8.0.0.tgz#e0da96f4f2ec4a88dd3a3030f476e38ab2126d87"
@@ -4826,6 +4851,11 @@ normalize-path@^3.0.0:
   resolved "https://registry.yarnpkg.com/normalize-path/-/normalize-path-3.0.0.tgz#0dcd69ff23a1c9b11fd0978316644a0388216a65"
   integrity sha512-6eZs5Ls3WtCisHWp9S2GUy8dqkpGi4BVSz3GaqiE6ezub0512ESztXUwUB6C6IKbQkY2Pnb/mD4WYojCRwcwLA==
 
+normalize-range@^0.1.2:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/normalize-range/-/normalize-range-0.1.2.tgz#2d10c06bdfd312ea9777695a4d28439456b75942"
+  integrity sha1-LRDAa9/TEuqXd2laTShDlFa3WUI=
+
 now-and-later@^2.0.0:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/now-and-later/-/now-and-later-2.0.1.tgz#8e579c8685764a7cc02cb680380e94f43ccb1f7c"
@@ -4863,6 +4893,11 @@ npm-run-path@^2.0.0:
     gauge "~2.7.3"
     set-blocking "~2.0.0"
 
+num2fraction@^1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/num2fraction/-/num2fraction-1.2.2.tgz#6f682b6a027a4e9ddfa4564cd2589d1d4e669ede"
+  integrity sha1-b2gragJ6Tp3fpFZM0lidHU5mnt4=
+
 number-is-nan@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/number-is-nan/-/number-is-nan-1.0.1.tgz#097b602b53422a522c1afb8790318336941a011d"
@@ -5311,6 +5346,20 @@ posix-character-classes@^0.1.0:
   resolved "https://registry.yarnpkg.com/posix-character-classes/-/posix-character-classes-0.1.1.tgz#01eac0fe3b5af71a2a6c02feabb8c1fef7e00eab"
   integrity sha1-AerA/jta9xoqbAL+q7jB/vfgDqs=
 
+postcss-value-parser@^4.0.2:
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/postcss-value-parser/-/postcss-value-parser-4.0.2.tgz#482282c09a42706d1fc9a069b73f44ec08391dc9"
+  integrity sha512-LmeoohTpp/K4UiyQCwuGWlONxXamGzCMtFxLq4W1nZVGIQLYvMCJx3yAF9qyyuFpflABI9yVdtJAqbihOsCsJQ==
+
+postcss@^7.0.17, postcss@^7.0.18:
+  version "7.0.18"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-7.0.18.tgz#4b9cda95ae6c069c67a4d933029eddd4838ac233"
+  integrity sha512-/7g1QXXgegpF+9GJj4iN7ChGF40sYuGYJ8WZu8DZWnmhQ/G36hfdk3q9LBJmoK+lZ+yzZ5KYpOoxq7LF1BxE8g==
+  dependencies:
+    chalk "^2.4.2"
+    source-map "^0.6.1"
+    supports-color "^6.1.0"
+
 prelude-ls@~1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.1.2.tgz#21932a549f5e52ffd9a827f570e04be62a97da54"