diff --git a/README.md b/README.md
index 19bef5e4..95cfb0fa 100644
--- a/README.md
+++ b/README.md
@@ -30,7 +30,9 @@ A responsive, clean and simple [Hexo](http://hexo.io) theme for a personal websi
 - Projects list
 - I18n support
 - Disqus / Utterances
-- Google analytics / Baidu Tongji / [Umami Analytics](https://umami.is) 
+- Google analytics / Baidu Tongji / [Umami Analytics](https://umami.is)
+- Web-App manifests
+- Custom style injection
 - Font Awesome icons
 - Simplicity
 
@@ -64,23 +66,23 @@ A responsive, clean and simple [Hexo](http://hexo.io) theme for a personal websi
     # theme: landscape
     theme: cactus
     ```
-   
+
    See below for more information on how to customize this theme.
 
 3. Create pages and articles with the `hexo new [layout] <title>` command.
    For example, to create an "about me" page, run:
-   
+
     ```sh
     $ hexo new page about
     ```
-   
+
    This will create a new file in `source/about/index.md`
    Similarly, you can create a new article with
-   
+
     ```sh
     $ hexo new post "hello world"
     ```
-   
+
    and add some interesting content in `source/_posts/hello-world.md`.
 
 4. Run: `hexo generate` and `hexo server`
@@ -258,7 +260,7 @@ Set the `rss` field in the `_config.yml` to one of the following values:
 
 ### Analytics
 
-Add you Google, Baidu, Cloudflare or Umami Analytics `tracking_id` to the `_config.yml`.
+Add your Google, Baidu, Cloudflare or Umami Analytics `tracking_id` to the `_config.yml`.
 
 ```yml
 google_analytics:
@@ -280,6 +282,55 @@ umami_analytics:
   script_name: umami.js
 ```
 
+### Web-App Manifests
+
+Cactus supports [Web-App Manifests](https://developer.mozilla.org/en-US/docs/Web/Manifest). Add an entry like this to the `_config.yml`:
+
+```yml
+manifest:
+  url: /manifest.json
+```
+
+This will tell Cactus to insert a manifest link into generated HTML files.
+
+```html
+<link rel="manifest" href="/meta/manifest.json">
+```
+
+Example of a simple `manifest.json` file:
+
+```json
+{
+  "name": "MyApp",
+  "short_name": "MyApp",
+  "theme_color": "#323232",
+  "background_color":"#323232",
+  "display":"standalone",
+  "icons": [
+    {
+      "src": "/images/my-app-icon-128x128.png",
+      "sizes": "128x128",
+      "type":"image/png"
+    }
+  ]
+}
+```
+
+### Custom Style Injection
+
+Want to overwrite Cactus' styles with your own? No problem. Put a `global.styl` ([Stylus](https://stylus-lang.com/)) or `global.css` (normal CSS) file at `source/css/global.styl` or `source/css/global.css` and tell Cactus where to find it.
+
+```yaml
+styles:
+  - url: /css/global
+```
+
+Hexo will compile Stylus files as needed and Cactus will include a link to the style sheet in all generated HTML files.
+
+```html
+<link rel="stylesheet" href="/css/global.css">
+```
+
 ### CDN
 
 Load Javascript and CSS resources from a CDN. Enabled by default, loads all resources from [cdnjs](https://cdnjs.com/).
@@ -362,7 +413,7 @@ date: 2017-12-24 23:29:53
 tags:
 - Foo
 - Bar
-categories: 
+categories:
 - Baz
 ---
 
@@ -384,7 +435,7 @@ Similarly, you can create a page with an overview of all categories by running:
 $ hexo new page categories
 ```
 
-and adding `type: categories` to the front-matter of `source/categories/index.md`. 
+and adding `type: categories` to the front-matter of `source/categories/index.md`.
 
 Finally, don't forget to create a link to these pages, for example in the navigation menu:
 
diff --git a/_config.yml b/_config.yml
index 6cf87edc..dd5de34b 100644
--- a/_config.yml
+++ b/_config.yml
@@ -24,7 +24,7 @@ nav:
 # The 'icon' keys should correspond to Fontawesome icon names
 # (see https://fontawesome.com/icons?d=gallery&s=brands);
 # only 'mail' is an exception.
-# You can optionally add a 'label' key to set the title attribute on the link. 
+# You can optionally add a 'label' key to set the title attribute on the link.
 # 'icon' value will be used as title when 'label' is missing.
 social_links:
   -
@@ -131,6 +131,17 @@ favicon:
     url: /images/apple-touch-icon.png
     gravatar: false
 
+# Inserts a <link> to a web-app manifest file.
+#
+# manifest:
+#   url: /manifest.json
+
+# Add custom CSS styles to every page.
+# This will try to compile an Stylus file at /css/global.styl
+# or a normal CSS sheet at /css/global.css
+# styles:
+#   - url: /css/global
+
 # The color scheme that should be used to highlight codeblocks.
 # See source/css/_highlight for a list of all available color schemes.
 # highlight: rainbow
diff --git a/layout/_partial/head.ejs b/layout/_partial/head.ejs
index 91806da5..b6ebf5dd 100644
--- a/layout/_partial/head.ejs
+++ b/layout/_partial/head.ejs
@@ -12,6 +12,12 @@
         google_plus:    theme.open_graph.google_plus,
     }) %>
     <%- meta(page) %>
+
+    <% if (theme.manifest) { %>
+      <% if (theme.manifest.url) { %>
+        <link rel="manifest" href="<%= url_for(theme.manifest.url) %>">
+      <% } %>
+    <% } %>
     <% if (theme.favicon) { %>
       <% if (theme.favicon.desktop) { %>
         <% if (theme.gravatar && (theme.gravatar.email || theme.gravatar.hash) && theme.favicon.desktop.gravatar) { %>
@@ -54,6 +60,11 @@
     <%- partial('./umami_analytics.ejs') %>
     <!-- styles -->
     <%- css('css/style') %>
+    <% if (theme.styles) { %>
+      <% for (var i in theme.styles) { %>
+        <%- css(theme.styles[i].url) %>
+      <% } %>
+    <% } %>
     <!-- persian styles -->
     <% if (theme.direction && theme.direction === 'rtl') { %>
       <%- css('css/rtl') %>