diff --git a/.stylelintrc.json b/.stylelintrc.json
new file mode 100644
index 00000000..0445e175
--- /dev/null
+++ b/.stylelintrc.json
@@ -0,0 +1,6 @@
+{
+  "extends": "stylelint-config-standard",
+  "ignoreFiles": [
+  	"src/decorators/*.js"
+  ]
+}
diff --git a/package-lock.json b/package-lock.json
index 67fbbc0f..801ce0e6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1318,12 +1318,40 @@
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@@ -1358,6 +1386,23 @@
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@@ -1811,6 +1856,12 @@
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@@ -1842,12 +1893,30 @@
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@@ -1913,6 +1982,32 @@
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+      "requires": {
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@@ -7414,6 +7553,15 @@
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+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/slash/-/slash-3.0.0.tgz",
+          "integrity": "sha512-g9Q1haeby36OSStwb4ntCGGGaKsaVSjQ68fBxoQcutl5fS1vuY18H3wSt3jFyFtrkx+Kz0V1G85A4MyAdDMi2Q==",
+          "dev": true
+        },
+        "string-width": {
+          "version": "4.2.0",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.0.tgz",
+          "integrity": "sha512-zUz5JD+tgqtuDjMhwIg5uFVV3dtqZ9yQJlZVfq4I01/K5Paj5UHj7VyrQOJvzawSVlKpObApbfD0Ed6yJc+1eg==",
+          "dev": true,
+          "requires": {
+            "emoji-regex": "^8.0.0",
+            "is-fullwidth-code-point": "^3.0.0",
+            "strip-ansi": "^6.0.0"
+          }
+        },
+        "strip-ansi": {
+          "version": "6.0.0",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.0.tgz",
+          "integrity": "sha512-AuvKTrTfQNYNIctbR1K/YGTR1756GycPsg7b9bdV9Duqur4gv6aKqHXah67Z8ImS7WEz5QVcOtlfW2rZEugt6w==",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^5.0.0"
+          }
+        },
+        "strip-indent": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/strip-indent/-/strip-indent-3.0.0.tgz",
+          "integrity": "sha512-laJTa3Jb+VQpaC6DseHhF7dXVqHTfJPCRDaEbid/drOhgitgYku/letMUqOXFoWV0zIIUbjpdH2t+tYj4bQMRQ==",
+          "dev": true,
+          "requires": {
+            "min-indent": "^1.0.0"
+          }
+        },
+        "supports-color": {
+          "version": "7.1.0",
+          "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-7.1.0.tgz",
+          "integrity": "sha512-oRSIpR8pxT1Wr2FquTNnGet79b3BWljqOuoW/h4oBhxJ/HUbX5nX6JSruTkvXDCFMwDPvsaTTbvMLKZWSy0R5g==",
+          "dev": true,
+          "requires": {
+            "has-flag": "^4.0.0"
+          }
+        },
+        "to-regex-range": {
+          "version": "5.0.1",
+          "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
+          "integrity": "sha512-65P7iz6X5yEr1cwcgvQxbbIw7Uk3gOy5dIdtZ4rDveLqhrdJP+Li/Hx6tyK0NEb+2GCyneCMJiGqrADCSNk8sQ==",
+          "dev": true,
+          "requires": {
+            "is-number": "^7.0.0"
+          }
+        },
+        "trim-newlines": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/trim-newlines/-/trim-newlines-3.0.0.tgz",
+          "integrity": "sha512-C4+gOpvmxaSMKuEf9Qc134F1ZuOHVXKRbtEflf4NTtuuJDEIJ9p5PXsalL8SkeRw+qit1Mo+yuvMPAKwWg/1hA==",
+          "dev": true
+        },
+        "write-file-atomic": {
+          "version": "3.0.3",
+          "resolved": "https://registry.npmjs.org/write-file-atomic/-/write-file-atomic-3.0.3.tgz",
+          "integrity": "sha512-AvHcyZ5JnSfq3ioSyjrBkH9yW4m7Ayk8/9My/DD9onKeu/94fwrMocemO2QAJFAlnnDN+ZDS+ZjAR5ua1/PV/Q==",
+          "dev": true,
+          "requires": {
+            "imurmurhash": "^0.1.4",
+            "is-typedarray": "^1.0.0",
+            "signal-exit": "^3.0.2",
+            "typedarray-to-buffer": "^3.1.5"
+          }
+        },
+        "yargs-parser": {
+          "version": "16.1.0",
+          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-16.1.0.tgz",
+          "integrity": "sha512-H/V41UNZQPkUMIT5h5hiwg4QKIY1RPvoBV4XcjUbRM8Bk2oKqqyZ0DIEbTFZB0XjbtSPG8SAa/0DxCQmiRgzKg==",
+          "dev": true,
+          "requires": {
+            "camelcase": "^5.0.0",
+            "decamelize": "^1.2.0"
+          }
+        }
+      }
+    },
+    "stylelint-config-recommended": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/stylelint-config-recommended/-/stylelint-config-recommended-3.0.0.tgz",
+      "integrity": "sha512-F6yTRuc06xr1h5Qw/ykb2LuFynJ2IxkKfCMf+1xqPffkxh0S09Zc902XCffcsw/XMFq/OzQ1w54fLIDtmRNHnQ==",
+      "dev": true
+    },
+    "stylelint-config-standard": {
+      "version": "20.0.0",
+      "resolved": "https://registry.npmjs.org/stylelint-config-standard/-/stylelint-config-standard-20.0.0.tgz",
+      "integrity": "sha512-IB2iFdzOTA/zS4jSVav6z+wGtin08qfj+YyExHB3LF9lnouQht//YyB0KZq9gGz5HNPkddHOzcY8HsUey6ZUlA==",
+      "dev": true,
+      "requires": {
+        "stylelint-config-recommended": "^3.0.0"
+      }
+    },
+    "subarg": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/subarg/-/subarg-1.0.0.tgz",
+      "integrity": "sha1-9izxdYHplrSPyWVpn1TAauJouNI=",
       "dev": true,
       "requires": {
         "minimist": "^1.1.0"
       }
     },
+    "sugarss": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/sugarss/-/sugarss-2.0.0.tgz",
+      "integrity": "sha512-WfxjozUk0UVA4jm+U1d736AUpzSrNsQcIbyOkoE364GrtWmIrFdk5lksEupgWMD4VaT/0kVx1dobpiDumSgmJQ==",
+      "dev": true,
+      "requires": {
+        "postcss": "^7.0.2"
+      }
+    },
     "supports-color": {
       "version": "5.5.0",
       "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
@@ -18774,6 +19836,12 @@
       "integrity": "sha512-fnCWiifNhK8i2Z7b9R5tbNahpxrRdAaQbnoxKlT2KrSCj9Kq/yBSgulCRgBJRhy1dPnSY5slg5ehPUnzpEcHlg==",
       "dev": true
     },
+    "svg-tags": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/svg-tags/-/svg-tags-1.0.0.tgz",
+      "integrity": "sha1-WPcc7jvVGbWdSyqEO2x95krAR2Q=",
+      "dev": true
+    },
     "svgo": {
       "version": "1.3.2",
       "resolved": "https://registry.npmjs.org/svgo/-/svgo-1.3.2.tgz",
@@ -19262,6 +20330,15 @@
       "integrity": "sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=",
       "dev": true
     },
+    "typedarray-to-buffer": {
+      "version": "3.1.5",
+      "resolved": "https://registry.npmjs.org/typedarray-to-buffer/-/typedarray-to-buffer-3.1.5.tgz",
+      "integrity": "sha512-zdu8XMNEDepKKR+XYOXAVPtWui0ly0NtohUscw+UmaHiAWT8hrV1rr//H6V+0DvJ3OQ19S979M0laLfX8rm82Q==",
+      "dev": true,
+      "requires": {
+        "is-typedarray": "^1.0.0"
+      }
+    },
     "uglify-js": {
       "version": "3.8.0",
       "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.8.0.tgz",
@@ -19413,6 +20490,15 @@
       "integrity": "sha1-/+3ks2slKQaW5uFl1KWe25mOawI=",
       "dev": true
     },
+    "unist-util-find-all-after": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/unist-util-find-all-after/-/unist-util-find-all-after-1.0.5.tgz",
+      "integrity": "sha512-lWgIc3rrTMTlK1Y0hEuL+k+ApzFk78h+lsaa2gHf63Gp5Ww+mt11huDniuaoq1H+XMK2lIIjjPkncxXcDp3QDw==",
+      "dev": true,
+      "requires": {
+        "unist-util-is": "^3.0.0"
+      }
+    },
     "unist-util-is": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/unist-util-is/-/unist-util-is-3.0.0.tgz",
@@ -20166,6 +21252,15 @@
       "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI=",
       "dev": true
     },
+    "yaml": {
+      "version": "1.7.2",
+      "resolved": "https://registry.npmjs.org/yaml/-/yaml-1.7.2.tgz",
+      "integrity": "sha512-qXROVp90sb83XtAoqE8bP9RwAkTTZbugRUTm5YeFCBfNRPEp2YzTeqWiz7m5OORHzEvrA/qcGS8hp/E+MMROYw==",
+      "dev": true,
+      "requires": {
+        "@babel/runtime": "^7.6.3"
+      }
+    },
     "yargs": {
       "version": "3.27.0",
       "resolved": "https://registry.npmjs.org/yargs/-/yargs-3.27.0.tgz",
diff --git a/package.json b/package.json
index b9a030bf..0839a277 100755
--- a/package.json
+++ b/package.json
@@ -92,6 +92,8 @@
     "eslint-plugin-react": "^7.16.0",
     "eslint-plugin-standard": "^4.0.1",
     "eslint-plugin-prettier": "3.1.2",
+    "stylelint": "13.2.0",
+    "stylelint-config-standard": "20.0.0",
     "prettier": "1.19.1",
     "gh-pages": "1.1.0",
     "github-changes": "^1.1.2",
@@ -117,6 +119,7 @@
     "rollup-plugin-sass": "^1.2.2",
     "rollup-plugin-url": "^3.0.1",
     "rollup-plugin-eslint": "7.0.0",
+    "rollup-plugin-stylelint": "1.0.0",
     "semantic-release": "15.1.5",
     "sinon": "^1.17.7",
     "snazzy": "^2.0.1",
diff --git a/rollup.config.js b/rollup.config.js
index 030b6451..36652714 100644
--- a/rollup.config.js
+++ b/rollup.config.js
@@ -6,6 +6,7 @@ import postcss from "rollup-plugin-postcss";
 import resolve from "rollup-plugin-node-resolve";
 import url from "rollup-plugin-url";
 import { eslint } from "rollup-plugin-eslint";
+import stylelint from "rollup-plugin-stylelint";
 import svgr from "@svgr/rollup";
 
 /* postCSS plugins */
@@ -30,7 +31,14 @@ export default {
   ],
   plugins: [
     external(),
-    eslint(), 
+    eslint({ 
+    	throwOnError: true,
+    	throwOnWarning: true
+    }), 
+    stylelint({ 
+    	throwOnError: true, 
+    	throwOnWarning: true 
+    }),
     postcss({
       plugins: [simplevars(), nested()],
       modules: true,
diff --git a/src/decorators/styler.js b/src/decorators/styler.js
index e5826077..7e78ac5a 100755
--- a/src/decorators/styler.js
+++ b/src/decorators/styler.js
@@ -19,10 +19,10 @@ export function getTooltipStyle(colors) {
       "&.place-top": {
         "margin-top": "-10px"
       },
-      "&.place-top:before": {
+      "&.place-top::before": {
         "border-top": "8px solid " + borderColor
       },
-      "&.place-top:after": {
+      "&.place-top::after": {
         "border-left": "8px solid transparent",
         "border-right": "8px solid transparent",
         "bottom": "-6px",
@@ -36,10 +36,10 @@ export function getTooltipStyle(colors) {
       "&.place-bottom": {
         "margin-top": "10px"
       },
-      "&.place-bottom:before": {
+      "&.place-bottom::before": {
         "border-bottom": "8px solid " + borderColor
       },
-      "&.place-bottom:after": {
+      "&.place-bottom::after": {
         "border-left": "8px solid transparent",
         "border-right": "8px solid transparent",
         "top": "-6px",
@@ -53,10 +53,10 @@ export function getTooltipStyle(colors) {
       "&.place-left": {
         "margin-left": "-10px"
       },
-      "&.place-left:before": {
+      "&.place-left::before": {
         "border-left": "8px solid " + borderColor
       },
-      "&.place-left:after": {
+      "&.place-left::after": {
         "border-top": "5px solid transparent",
         "border-bottom": "5px solid transparent",
         "right": "-6px",
@@ -70,10 +70,10 @@ export function getTooltipStyle(colors) {
       "&.place-right": {
         "margin-left": "10px"
       },
-      "&.place-right:before": {
+      "&.place-right::before": {
         "border-right": "8px solid " + borderColor
       },
-      "&.place-right:after": {
+      "&.place-right::after": {
         "border-top": "5px solid transparent",
         "border-bottom": "5px solid transparent",
         "left": "-6px",
diff --git a/src/index.scss b/src/index.scss
index d846e8e3..8f6849ae 100755
--- a/src/index.scss
+++ b/src/index.scss
@@ -11,27 +11,30 @@
   top: -999em;
   visibility: hidden;
   z-index: 999;
+
   &.allow_hover,
   &.allow_click {
-    pointer-events:auto ;
+    pointer-events: auto;
   }
-  &:before,
-  &:after {
-    content: "" ;
-    width: 0  ;
-    height: 0  ;
-    position: absolute ;
+
+  &::before,
+  &::after {
+    content: "";
+    width: 0;
+    height: 0;
+    position: absolute;
   }
+
   &.show {
-    opacity: 0.9 ;
-    margin-top: 0px ;
-    margin-left: 0px ;
-    visibility: visible ;
+    opacity: 0.9;
+    margin-top: 0;
+    margin-left: 0;
+    visibility: visible;
   }
 
   // Place
   &.place-top {
-    &:before {
+    &::before {
       border-left: 10px solid transparent;
       border-right: 10px solid transparent;
       bottom: -8px;
@@ -39,8 +42,9 @@
       margin-left: -10px;
     }
   }
+
   &.place-bottom {
-    &:before {
+    &::before {
       border-left: 10px solid transparent;
       border-right: 10px solid transparent;
       top: -8px;
@@ -48,17 +52,19 @@
       margin-left: -10px;
     }
   }
+
   &.place-left {
-    &:before {
+    &::before {
       border-top: 6px solid transparent;
       border-bottom: 6px solid transparent;
-      right: -8px ;
+      right: -8px;
       top: 50%;
       margin-top: -5px;
     }
   }
+
   &.place-right {
-    &:before {
+    &::before {
       border-top: 6px solid transparent;
       border-bottom: 6px solid transparent;
       left: -8px;
@@ -69,9 +75,8 @@
 
   // Wrapping
   .multi-line {
-    display: block ;
-    padding: 2px 0px ;
-    text-align: center ;
+    display: block;
+    padding: 2px 0;
+    text-align: center;
   }
-
 }
diff --git a/test/index.spec.js b/test/index.spec.js
index c7206996..8ea4cecf 100644
--- a/test/index.spec.js
+++ b/test/index.spec.js
@@ -74,7 +74,7 @@ describe('Tooltip', () => {
 
            const arrowPositions = ['top', 'bottom', 'left', 'right']
            arrowPositions.forEach((pos) => {
-              expect(tooltipGeneratedStyle['&.place-' + pos + ':after']['border-' + pos + '-color'], pos + ' arrow color').to.
+              expect(tooltipGeneratedStyle['&.place-' + pos + '::after']['border-' + pos + '-color'], pos + ' arrow color').to.
               equal(res.arrowColor ? res.arrowColor : res.backgroundColor)
            })
   })