diff --git a/package-lock.json b/package-lock.json
index 8c5f99b..df9ea89 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -409,6 +409,32 @@
         "num2fraction": "^1.2.2",
         "postcss": "^5.2.5",
         "postcss-value-parser": "^3.2.3"
+      },
+      "dependencies": {
+        "has-flag": {
+          "version": "1.0.0",
+          "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-1.0.0.tgz",
+          "integrity": "sha1-nZ55MWXOAXoA8AQYxD+UKnsdEfo="
+        },
+        "postcss": {
+          "version": "5.2.18",
+          "resolved": "https://registry.npmjs.org/postcss/-/postcss-5.2.18.tgz",
+          "integrity": "sha512-zrUjRRe1bpXKsX1qAJNJjqZViErVuyEkMTRrwu4ud4sbTtIBRmtaYDrHmcGgmrbsW3MHfmtIf+vJumgQn+PrXg==",
+          "requires": {
+            "chalk": "^1.1.3",
+            "js-base64": "^2.1.9",
+            "source-map": "^0.5.6",
+            "supports-color": "^3.2.3"
+          }
+        },
+        "supports-color": {
+          "version": "3.2.3",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-3.2.3.tgz",
+          "integrity": "sha1-ZawFBLOVQXHYpklGsq48u4pfVPY=",
+          "requires": {
+            "has-flag": "^1.0.0"
+          }
+        }
       }
     },
     "aws-sign2": {
@@ -504,7 +530,7 @@
     "boolbase": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/boolbase/-/boolbase-1.0.0.tgz",
-      "integrity": "sha1-aN/1++YMUes3cl6p4+0xDcwed24=",
+      "integrity": "sha512-JZOSA7Mo9sNGB8+UjSgzdLtokWAky1zbztM3WRLCbZ70/3cTANmQmOdR7y2g+J0e2WXywy1yS468tY+IruqEww==",
       "dev": true
     },
     "boom": {
@@ -853,7 +879,7 @@
     "cheerio": {
       "version": "0.22.0",
       "resolved": "https://registry.npmjs.org/cheerio/-/cheerio-0.22.0.tgz",
-      "integrity": "sha1-qbqoYKP5tZWmuBsahocxIe06Jp4=",
+      "integrity": "sha512-8/MzidM6G/TgRelkzDG13y3Y9LxBjCb+8yOEZ9+wwq5gVF2w2pV0wmHvjfT0RvuxGyR7UEuK36r+yYMbT4uKgA==",
       "dev": true,
       "requires": {
         "css-select": "~1.2.0",
@@ -973,7 +999,6 @@
       "version": "1.9.3",
       "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-1.9.3.tgz",
       "integrity": "sha512-QfAUtd+vFdAtFQcC8CCyYt1fYWxSqAiK2cSD6zDB8N3cpsEBAvRxp9zOGg6G/SHHJYAT88/az/IuDGALsNVbGg==",
-      "dev": true,
       "requires": {
         "color-name": "1.1.3"
       }
@@ -981,8 +1006,7 @@
     "color-name": {
       "version": "1.1.3",
       "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.3.tgz",
-      "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=",
-      "dev": true
+      "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU="
     },
     "combine-source-map": {
       "version": "0.8.0",
@@ -3173,9 +3197,9 @@
       }
     },
     "has-flag": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-1.0.0.tgz",
-      "integrity": "sha1-nZ55MWXOAXoA8AQYxD+UKnsdEfo="
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
+      "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0="
     },
     "has-generators": {
       "version": "1.0.1",
@@ -3718,9 +3742,9 @@
       }
     },
     "js-base64": {
-      "version": "2.5.1",
-      "resolved": "https://registry.npmjs.org/js-base64/-/js-base64-2.5.1.tgz",
-      "integrity": "sha512-M7kLczedRMYX4L8Mdh4MzyAMM9O5osx+4FcOQuTvr3A9F2D9S5JXheN0ewNbrvK2UatkTRhL5ejGmGSjNMiZuw=="
+      "version": "2.6.4",
+      "resolved": "https://registry.npmjs.org/js-base64/-/js-base64-2.6.4.tgz",
+      "integrity": "sha512-pZe//GGmwJndub7ZghVHz7vjb2LgC1m8B07Au3eYqeqv9emhESByMXxaEgkUkEqJe87oBbSniGYoQNIBklc7IQ=="
     },
     "js-stringify": {
       "version": "1.0.2",
@@ -6323,14 +6347,48 @@
       "dev": true
     },
     "postcss": {
-      "version": "5.2.5",
-      "resolved": "https://registry.npmjs.org/postcss/-/postcss-5.2.5.tgz",
-      "integrity": "sha1-7EKMJ9/8f6xllhNAqbAi+kr18FY=",
+      "version": "7.0.36",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-7.0.36.tgz",
+      "integrity": "sha512-BebJSIUMwJHRH0HAQoxN4u1CN86glsrwsW0q7T+/m44eXOUAxSNdHRkNZPYz5vVUbg17hFgOQDE7fZk7li3pZw==",
       "requires": {
-        "chalk": "^1.1.3",
-        "js-base64": "^2.1.9",
-        "source-map": "^0.5.6",
-        "supports-color": "^3.1.2"
+        "chalk": "^2.4.2",
+        "source-map": "^0.6.1",
+        "supports-color": "^6.1.0"
+      },
+      "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==",
+          "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==",
+          "requires": {
+            "ansi-styles": "^3.2.1",
+            "escape-string-regexp": "^1.0.5",
+            "supports-color": "^5.3.0"
+          },
+          "dependencies": {
+            "supports-color": {
+              "version": "5.5.0",
+              "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
+              "integrity": "sha512-QjVjwdXIt408MIiAqCX4oUKsgU2EqAGzs2Ppkm4aQYbjm+ZEWEcW4SfFNTr4uMNZma0ey4f5lgLrkB0aX0QMow==",
+              "requires": {
+                "has-flag": "^3.0.0"
+              }
+            }
+          }
+        },
+        "source-map": {
+          "version": "0.6.1",
+          "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+          "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g=="
+        }
       }
     },
     "postcss-value-parser": {
@@ -7610,11 +7668,11 @@
       }
     },
     "supports-color": {
-      "version": "3.2.3",
-      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-3.2.3.tgz",
-      "integrity": "sha1-ZawFBLOVQXHYpklGsq48u4pfVPY=",
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-6.1.0.tgz",
+      "integrity": "sha512-qe1jfm1Mg7Nq/NSh6XE24gPXROEVsWHxC1LIx//XNlD9iw7YZQGjZNjYN7xGaEG6iKdA8EtNFW6R0gjnVXp+wQ==",
       "requires": {
-        "has-flag": "^1.0.0"
+        "has-flag": "^3.0.0"
       }
     },
     "syntax-error": {
diff --git a/package.json b/package.json
index a1ca260..5bc981f 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
     "nprogress": "0.2.0",
     "onmount": "1.3.0",
     "pjax": "0.2.4",
-    "postcss": "5.2.5",
+    "postcss": "7.0.36",
     "pug": "^3.0.1",
     "stylus": "0.54.5",
     "uglifyify": "3.0.4",