diff --git a/package-lock.json b/package-lock.json
index f1f47ffe9..819db8ef3 100644
--- a/package-lock.json
+++ b/package-lock.json
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-            "yargs-parser": "^13.1.2"
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@@ -21456,27 +21192,6 @@
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-    "scss-tokenizer": {
-      "version": "0.2.3",
-      "resolved": "https://registry.npmjs.org/scss-tokenizer/-/scss-tokenizer-0.2.3.tgz",
-      "integrity": "sha1-jrBtualyMzOCTT9VMGQRSYR85dE=",
-      "dev": true,
-      "requires": {
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       "resolved": "https://registry.npmjs.org/seedrandom/-/seedrandom-2.4.4.tgz",
@@ -22075,6 +21790,12 @@
         "amdefine": ">=0.0.4"
       }
     },
+    "source-map-js": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/source-map-js/-/source-map-js-1.0.2.tgz",
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+      "dev": true
+    },
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       "version": "0.5.2",
       "resolved": "https://registry.npmjs.org/source-map-resolve/-/source-map-resolve-0.5.2.tgz",
@@ -22417,15 +22138,6 @@
       "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.3.1.tgz",
       "integrity": "sha1-+vUbnrdKrvOzrPStX2Gr8ky3uT4="
     },
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-      "version": "1.4.1",
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-      "dev": true,
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@@ -22769,15 +22481,6 @@
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-      "dev": true,
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@@ -24604,17 +24307,6 @@
         }
       }
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-      "resolved": "https://registry.npmjs.org/tar/-/tar-2.2.2.tgz",
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       "resolved": "https://registry.npmjs.org/tcompare/-/tcompare-3.0.5.tgz",
@@ -25339,12 +25031,6 @@
         "cdt2d": "^1.0.0"
       }
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-      "dev": true
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       "resolved": "https://registry.npmjs.org/trim-right/-/trim-right-1.0.1.tgz",
@@ -25357,31 +25043,6 @@
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       "dev": true
     },
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-          "dev": true,
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diff --git a/package.json b/package.json
index e005e96aa..9952b212b 100644
--- a/package.json
+++ b/package.json
@@ -105,7 +105,7 @@
     "lodash.uniqby": "4.7.0",
     "mini-css-extract-plugin": "^1.6.2",
     "minilog": "2.0.8",
-    "node-sass": "4.14.1",
+    "sass": "1.49.7",
     "pako": "0.2.8",
     "plotly.js": "1.47.4",
     "postcss-loader": "2.0.10",
diff --git a/src/components/navigation/conference/2019/navigation.scss b/src/components/navigation/conference/2019/navigation.scss
index 5036df57a..b039e8773 100644
--- a/src/components/navigation/conference/2019/navigation.scss
+++ b/src/components/navigation/conference/2019/navigation.scss
@@ -2,7 +2,7 @@
 @import "../../../../frameless";
 
 #navigation {
-    .ul.2019 {
+    .ul.mod-2019 {
         display: flex;
         justify-content: space-between;
         flex-flow: row nowrap;
@@ -10,7 +10,7 @@
         list-style-type: none;
     }
 
-    .li-left.2019 {
+    .li-left.mod-2019 {
         margin-top: 0;
         margin-right: 10px;
         color: $type-white;