diff --git a/package-lock.json b/package-lock.json
index a1c25187..c7087e75 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -698,6 +698,60 @@
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         "postcss-value-parser": "^3.2.3"
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+          "dev": true,
+          "requires": {
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+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz",
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+          "dev": true,
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+          "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0=",
+          "dev": true
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+          "resolved": "https://registry.npmjs.org/postcss/-/postcss-6.0.23.tgz",
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+          "dev": true,
+          "requires": {
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+            "source-map": "^0.6.1",
+            "supports-color": "^5.4.0"
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+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
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+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
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+          "dev": true,
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+          }
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@@ -3590,6 +3644,60 @@
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         "onecolor": "^3.0.4",
         "postcss": "^6.0.0"
+      },
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+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
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+          "dev": true,
+          "requires": {
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+          }
+        },
+        "chalk": {
+          "version": "2.4.2",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz",
+          "integrity": "sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==",
+          "dev": true,
+          "requires": {
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+          "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0=",
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+          "resolved": "https://registry.npmjs.org/postcss/-/postcss-6.0.23.tgz",
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+          "dev": true,
+          "requires": {
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+            "source-map": "^0.6.1",
+            "supports-color": "^5.4.0"
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+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
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+          "dev": true
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+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
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+          "dev": true,
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+          }
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@@ -8098,6 +8206,60 @@
         "postcss": "^6.0.0",
         "postcss-load-config": "^1.2.0",
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+          "dev": true,
+          "requires": {
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+          }
+        },
+        "chalk": {
+          "version": "2.4.2",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz",
+          "integrity": "sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==",
+          "dev": true,
+          "requires": {
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+            "escape-string-regexp": "^1.0.5",
+            "supports-color": "^5.3.0"
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+          "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
+          "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0=",
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+        "postcss": {
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+          "resolved": "https://registry.npmjs.org/postcss/-/postcss-6.0.23.tgz",
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+          "dev": true,
+          "requires": {
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+            "source-map": "^0.6.1",
+            "supports-color": "^5.4.0"
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+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
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@@ -12720,29 +12882,66 @@
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-      "integrity": "sha1-XE/qWJ8Kw7AMqnWxy8OihBlbfl0=",
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-        "source-map": "^0.5.6",
-        "supports-color": "^3.2.3"
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+        "source-map": "^0.6.1",
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+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz",
+          "integrity": "sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==",
+          "dev": true,
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+            "escape-string-regexp": "^1.0.5",
+            "supports-color": "^5.3.0"
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-          "integrity": "sha1-ZawFBLOVQXHYpklGsq48u4pfVPY=",
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@@ -12756,6 +12955,60 @@
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+          "requires": {
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+          }
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+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz",
+          "integrity": "sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==",
+          "dev": true,
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+          "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0=",
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+          "dev": true,
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+            "source-map": "^0.6.1",
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@@ -12768,11 +13021,63 @@
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           "integrity": "sha1-yz8+PHMtwPAe5wtAPzAuYddwmDg=",
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@@ -12787,6 +13092,60 @@
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+        },
+        "supports-color": {
+          "version": "5.5.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
+          "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==",
+          "dev": true,
+          "requires": {
+            "has-flag": "^3.0.0"
+          }
+        }
       }
     },
     "postcss-less": {
@@ -12878,6 +13237,60 @@
       "dev": true,
       "requires": {
         "postcss": "^6.0.1"
+      },
+      "dependencies": {
+        "ansi-styles": {
+          "version": "3.2.1",
+          "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
+          "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
+          "dev": true,
+          "requires": {
+            "color-convert": "^1.9.0"
+          }
+        },
+        "chalk": {
+          "version": "2.4.2",
+          "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz",
+          "integrity": "sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==",
+          "dev": true,
+          "requires": {
+            "ansi-styles": "^3.2.1",
+            "escape-string-regexp": "^1.0.5",
+            "supports-color": "^5.3.0"
+          }
+        },
+        "has-flag": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
+          "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0=",
+          "dev": true
+        },
+        "postcss": {
+          "version": "6.0.23",
+          "resolved": "https://registry.npmjs.org/postcss/-/postcss-6.0.23.tgz",
+          "integrity": "sha512-soOk1h6J3VMTZtVeVpv15/Hpdl2cBLX3CAw4TAbkpTJiNPk9YP/zWcD1ND+xEtvyuuvKzbxliTOIyvkSeSJ6ag==",
+          "dev": true,
+          "requires": {
+            "chalk": "^2.4.1",
+            "source-map": "^0.6.1",
+            "supports-color": "^5.4.0"
+          }
+        },
+        "source-map": {
+          "version": "0.6.1",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+          "dev": true
+        },
+        "supports-color": {
+          "version": "5.5.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
+          "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==",
+          "dev": true,
+          "requires": {
+            "has-flag": "^3.0.0"
+          }
+        }
       }
     },
     "postcss-reporter": {
diff --git a/package.json b/package.json
index 0e6f1ca5..9b596fc8 100644
--- a/package.json
+++ b/package.json
@@ -87,7 +87,7 @@
     "loose-envify": "1.3.1",
     "mocha": "3.4.2",
     "phantomjs-prebuilt": "2.1.14",
-    "postcss": "^6.0.0",
+    "postcss": "^7.0.36",
     "postcss-color-hex-alpha": "3.0.0",
     "postcss-custom-properties": "6.0.1",
     "postcss-import": "10.0.0",
diff --git a/yarn.lock b/yarn.lock
index 0c7f061e..4d90eec8 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -149,6 +149,12 @@ ansi-styles@^2.2.1:
   version "2.2.1"
   resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-2.2.1.tgz#b432dd3358b634cf75e1e4664368240533c1ddbe"
 
+ansi-styles@^3.2.1:
+  version "3.2.1"
+  resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-3.2.1.tgz#41fbb20243e50b12be0f04b8dedbf07520ce841d"
+  dependencies:
+    color-convert "^1.9.0"
+
 ansi-wrap@0.1.0, ansi-wrap@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/ansi-wrap/-/ansi-wrap-0.1.0.tgz#a82250ddb0015e9a27ca82e82ea603bbfa45efaf"
@@ -1628,6 +1634,14 @@ chalk@1.1.3, chalk@^1.0.0, chalk@^1.1.0, chalk@^1.1.1, chalk@^1.1.3:
     strip-ansi "^3.0.0"
     supports-color "^2.0.0"
 
+chalk@^2.4.2:
+  version "2.4.2"
+  resolved "https://registry.yarnpkg.com/chalk/-/chalk-2.4.2.tgz#cd42541677a54333cf541a49108c1432b44c9424"
+  dependencies:
+    ansi-styles "^3.2.1"
+    escape-string-regexp "^1.0.5"
+    supports-color "^5.3.0"
+
 check-error@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/check-error/-/check-error-1.0.2.tgz#574d312edd88bb5dd8912e9286dd6c0aed4aac82"
@@ -1815,10 +1829,20 @@ color-convert@^1.8.2:
   dependencies:
     color-name "^1.1.1"
 
+color-convert@^1.9.0:
+  version "1.9.3"
+  resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-1.9.3.tgz#bb71850690e1f136567de629d2d5471deda4c1e8"
+  dependencies:
+    color-name "1.1.3"
+
 color-diff@^0.1.3:
   version "0.1.7"
   resolved "https://registry.yarnpkg.com/color-diff/-/color-diff-0.1.7.tgz#6db78cd9482a8e459d40821eaf4b503283dcb8e2"
 
+color-name@1.1.3:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.3.tgz#a7d0558bd89c42f795dd42328f740831ca53bc25"
+
 color-name@^1.0.0, color-name@^1.1.1:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.2.tgz#5c8ab72b64bd2215d617ae9559ebb148475cf98d"
@@ -3625,7 +3649,7 @@ fs.realpath@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/fs.realpath/-/fs.realpath-1.0.0.tgz#1504ad2523158caa40db4a2787cb01411994ea4f"
 
-fsevents@1.2.4, fsevents@^1.0.0, fsevents@^1.1.2:
+fsevents@^1.0.0, fsevents@^1.1.2:
   version "1.2.4"
   resolved "https://registry.yarnpkg.com/fsevents/-/fsevents-1.2.4.tgz#f41dcb1af2582af3692da36fc55cbd8e1041c426"
   dependencies:
@@ -4099,6 +4123,10 @@ has-flag@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-1.0.0.tgz#9d9e793165ce017a00f00418c43f942a7b1d11fa"
 
+has-flag@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-3.0.0.tgz#b5d454dc2199ae225699f3467e5a07f3b955bafd"
+
 has-gulplog@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/has-gulplog/-/has-gulplog-0.1.0.tgz#6414c82913697da51590397dafb12f22967811ce"
@@ -5110,9 +5138,9 @@ lead@^1.0.0:
   dependencies:
     flush-write-stream "^1.0.2"
 
-leaflet@1.0.3:
-  version "1.0.3"
-  resolved "https://registry.yarnpkg.com/leaflet/-/leaflet-1.0.3.tgz#1f401b98b45c8192134c6c8d69686253805007c8"
+leaflet@1.4.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/leaflet/-/leaflet-1.4.0.tgz#d5f56eeb2aa32787c24011e8be4c77e362ae171b"
 
 levn@^0.3.0, levn@~0.3.0:
   version "0.3.0"
@@ -6571,6 +6599,14 @@ postcss@^6.0.0, postcss@^6.0.1:
     source-map "^0.5.6"
     supports-color "^3.2.3"
 
+postcss@^7.0.36:
+  version "7.0.36"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-7.0.36.tgz#056f8cffa939662a8f5905950c07d5285644dfcb"
+  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"
@@ -7693,9 +7729,9 @@ source-map@0.1.31:
   dependencies:
     amdefine ">=0.0.4"
 
-source-map@0.X, "source-map@>= 0.1.2", source-map@^0.5.0, source-map@^0.5.1, source-map@^0.5.3, source-map@^0.5.6, source-map@~0.5.0, source-map@~0.5.1, source-map@~0.5.3:
-  version "0.5.6"
-  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.5.6.tgz#75ce38f52bf0733c5a7f0c118d81334a2bb5f412"
+source-map@0.X, "source-map@>= 0.1.2", source-map@^0.6.1:
+  version "0.6.1"
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.6.1.tgz#74722af32e9614e9c287a8d0bbde48b5e2f1a263"
 
 source-map@^0.1.38, source-map@~0.1.30, source-map@~0.1.33:
   version "0.1.43"
@@ -7709,6 +7745,10 @@ source-map@^0.4.2:
   dependencies:
     amdefine ">=0.0.4"
 
+source-map@^0.5.0, source-map@^0.5.1, source-map@^0.5.3, source-map@^0.5.6, source-map@~0.5.0, source-map@~0.5.1, source-map@~0.5.3:
+  version "0.5.6"
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.5.6.tgz#75ce38f52bf0733c5a7f0c118d81334a2bb5f412"
+
 sparkles@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/sparkles/-/sparkles-1.0.0.tgz#1acbbfb592436d10bbe8f785b7cc6f82815012c3"
@@ -8069,6 +8109,18 @@ supports-color@^3.2.3:
   dependencies:
     has-flag "^1.0.0"
 
+supports-color@^5.3.0:
+  version "5.5.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-5.5.0.tgz#e2e69a44ac8772f78a1ec0b35b689df6530efc8f"
+  dependencies:
+    has-flag "^3.0.0"
+
+supports-color@^6.1.0:
+  version "6.1.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-6.1.0.tgz#0764abc69c63d5ac842dd4867e8d025e880df8f3"
+  dependencies:
+    has-flag "^3.0.0"
+
 sver-compat@^1.5.0:
   version "1.5.0"
   resolved "https://registry.yarnpkg.com/sver-compat/-/sver-compat-1.5.0.tgz#3cf87dfeb4d07b4a3f14827bc186b3fd0c645cd8"