diff --git a/client/coral-admin/src/containers/Configure/CommentSettings.js b/client/coral-admin/src/containers/Configure/CommentSettings.js
index 1051bb0ba..5a14cf565 100644
--- a/client/coral-admin/src/containers/Configure/CommentSettings.js
+++ b/client/coral-admin/src/containers/Configure/CommentSettings.js
@@ -51,6 +51,12 @@ const updateClosedMessage = (updateSettings) => (event) => {
   updateSettings({closedMessage});
 };
 
+const updateCustomCssUrl = (updateSettings) => (event) => {
+  console.log('updateCustomCssUrl', event.target.value);
+  const customCssUrl = event.target.value;
+  updateSettings({customCssUrl});
+};
+
 // If we are changing the measure we need to recalculate using the old amount
 // Same thing if we are just changing the amount
 const updateClosedTimeout = (updateSettings, ts, isMeasure) => (event) => {
@@ -165,7 +171,7 @@ const CommentSettings = ({fetchingSettings, title, updateSettings, settingsError
           </div>
         </div>
       </Card>
-      <Card className={`${styles.configSettingInfoBox}`}>
+      <Card className={styles.configSettingInfoBox}>
         <div className={styles.content}>
           {lang.t('configure.close-after')}
           <br />
@@ -188,6 +194,18 @@ const CommentSettings = ({fetchingSettings, title, updateSettings, settingsError
           </div>
         </div>
       </Card>
+      <Card className={styles.configSettingInfoBox}>
+        <div className={styles.content}>
+          {lang.t('configure.custom-css-url')}
+          <p>{lang.t('configure.custom-css-url-desc')}</p>
+          <br />
+          <Textfield
+            style={{width: '100%'}}
+            label={lang.t('configure.custom-css-url')}
+            value={settings.customCssUrl}
+            onChange={updateCustomCssUrl(updateSettings)} />
+        </div>
+      </Card>
     </div>
   );
 };
diff --git a/client/coral-admin/src/translations.json b/client/coral-admin/src/translations.json
index 42028c3a2..fc507400e 100644
--- a/client/coral-admin/src/translations.json
+++ b/client/coral-admin/src/translations.json
@@ -48,6 +48,8 @@
       "copy": "Copy to Clipboard"
     },
     "configure": {
+      "custom-css-url": "Custom CSS URL",
+      "custom-css-url-desc": "URL of a CSS stylesheet that will override default Embed Stream styles. Can be internal or external.",
       "enable-pre-moderation": "Enable pre-moderation",
       "enable-pre-moderation-text": "Moderators must approve any comment before it is published.",
       "require-email-verification": "Require Email Verification",
@@ -157,6 +159,8 @@
       "username_flags": ""
     },
     "configure": {
+      "custom-css-url": "URL CSS a medida",
+      "custom-css-url-desc": "URL de una hoja de estilo que va a sobrescribir los estilos por defecto de Embed Stream. Puede ser interna o externa.",
       "enable-pre-moderation": "Habilitar pre-moderación",
       "enable-pre-moderation-text": "Los moderadores deben aprobar cada comentario antes de que sea publicado.",
       "require-email-verification": "Necesita confirmación de correo",
diff --git a/models/setting.js b/models/setting.js
index adbf60d83..0987b141d 100644
--- a/models/setting.js
+++ b/models/setting.js
@@ -24,6 +24,10 @@ const SettingSchema = new Schema({
     type: Boolean,
     default: false
   },
+  customCssUrl: {
+    type: String,
+    default: ''
+  },
   infoBoxContent: {
     type: String,
     default: ''
diff --git a/routes/embed/index.js b/routes/embed/index.js
index 400d2eb4b..ccc872c1f 100644
--- a/routes/embed/index.js
+++ b/routes/embed/index.js
@@ -1,10 +1,14 @@
 const express = require('express');
 const router = express.Router();
+const SettingsService = require('../../services/settings');
 
 router.use('/:embed', (req, res, next) => {
   switch (req.params.embed) {
   case 'stream':
-    return res.render('embed/stream', {});
+    return SettingsService.retrieve()
+      .then(({customCssUrl}) => {
+        return res.render('embed/stream', {customCssUrl});
+      });
   default:
 
     // will return a 404.
diff --git a/views/embed/stream.ejs b/views/embed/stream.ejs
index 722864338..77b392b5f 100644
--- a/views/embed/stream.ejs
+++ b/views/embed/stream.ejs
@@ -5,6 +5,9 @@
     <link rel="stylesheet" type="text/css" href="/client/embed/stream/default.css">
     <link href="https://fonts.googleapis.com/css?family=Lato|Open+Sans" rel="stylesheet">
     <link href="https://fonts.googleapis.com/icon?family=Material+Icons" rel="stylesheet">
+    <% if (locals.customCssUrl) { %>
+      <link href="<%= customCssUrl %>" rel="stylesheet" type="text/css">
+    <% } %>
   </head>
   <body>
     <div id="coralStream"></div>