diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index e703b003..60711c96 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -48,30 +48,6 @@ mdBook builds on stable Rust, if you want to build mdBook from source, here are
 
 The resulting binary can be found in `mdBook/target/debug/` under the name `mdBook` or `mdBook.exe`.
 
-
-### Making changes to the style
-
-mdBook doesn't use CSS directly but uses [Stylus](http://stylus-lang.com/), a CSS-preprocessor which compiles to CSS.
-
-When you want to change the style, it is important to not change the CSS directly because any manual modification to
-the CSS files will be overwritten when compiling the stylus files. Instead, you should make your changes directly in the
-[stylus files](https://github.com/rust-lang-nursery/mdBook/tree/master/src/theme/stylus) and regenerate the CSS.
-
-For this to work, you first need [Node and NPM](https://nodejs.org/en/) installed on your machine.
-Then run the following command to install both [stylus](http://stylus-lang.com/) and [nib](https://tj.github.io/nib/), you might need `sudo` to install successfully.
-
-```
-npm install -g stylus nib
-```
-
-When that finished, you can simply regenerate the CSS files by building mdBook with the following command:
-
-```
-cargo build --features=regenerate-css
-```
-
-This should automatically call the appropriate stylus command to recompile the files to CSS and include them in the project.
-
 ### Making a pull-request
 
 When you feel comfortable that your changes could be integrated into mdBook, you can create a pull-request on GitHub.
diff --git a/Cargo.toml b/Cargo.toml
index b362a61e..03d885f9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,11 +8,7 @@ repository = "https://github.com/rust-lang-nursery/mdBook"
 keywords = ["book", "gitbook", "rustbook", "markdown"]
 license = "MPL-2.0"
 readme = "README.md"
-build = "build.rs"
-exclude = [
-    "book-example/*",
-    "src/theme/stylus/**",
-]
+exclude = ["book-example/*"]
 
 [dependencies]
 clap = "2.24"
@@ -47,9 +43,6 @@ ws = { version = "0.7", optional = true}
 elasticlunr-rs = { version = "2.3", optional = true, default-features = false }
 ammonia = { version = "1.1", optional = true }
 
-[build-dependencies]
-error-chain = "0.12"
-
 [dev-dependencies]
 select = "0.4"
 pretty_assertions = "0.5"
@@ -60,7 +53,6 @@ pulldown-cmark-to-cmark = "1.1.0"
 default = ["output", "watch", "serve", "search"]
 debug = []
 output = []
-regenerate-css = []
 watch = ["notify"]
 serve = ["iron", "staticfile", "ws"]
 search = ["elasticlunr-rs", "ammonia"]
diff --git a/appveyor.yml b/appveyor.yml
index 6ab52500..f309c090 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,7 +1,6 @@
 environment:
   global:
     PROJECT_NAME: mdBook
-    nodejs_version: "6"
   matrix:
     # Stable channel
     - TARGET: i686-pc-windows-msvc
@@ -32,17 +31,12 @@ install:
   - set PATH=%PATH%;C:\Users\appveyor\.cargo\bin
   - rustc -Vv
   - cargo -V
-  - ps: Install-Product node $env:nodejs_version
-  - node --version
-  - npm --version
-  - npm install -g stylus nib
 
 build: false
 
 # Equivalent to Travis' `script` phase
 test_script:
   - cargo build --verbose
-  - cargo build --verbose --features=regenerate-css
   - cargo test --verbose
 
 before_deploy:
diff --git a/build.rs b/build.rs
deleted file mode 100644
index 13697491..00000000
--- a/build.rs
+++ /dev/null
@@ -1,100 +0,0 @@
-// build.rs
-
-use std::env;
-use std::path::Path;
-#[macro_use]
-extern crate error_chain;
-
-#[cfg(windows)]
-mod execs {
-    use std::process::Command;
-
-    pub fn cmd(program: &str) -> Command {
-        let mut cmd = Command::new("cmd");
-        cmd.args(&["/c", program]);
-        cmd
-    }
-}
-#[cfg(not(windows))]
-mod execs {
-    use std::process::Command;
-
-    pub fn cmd(program: &str) -> Command {
-        Command::new(program)
-    }
-}
-
-error_chain!{
- foreign_links {
-        Io(std::io::Error);
-    }
-}
-
-fn program_exists(program: &str) -> Result<()> {
-    execs::cmd(program)
-        .arg("-v")
-        .output()
-        .chain_err(|| format!("Please install '{}'!", program))?;
-    Ok(())
-}
-
-fn npm_package_exists(package: &str) -> Result<()> {
-    let status = execs::cmd("npm")
-        .args(&["list", "-g"])
-        .arg(package)
-        .output();
-
-    match status {
-        Ok(ref out) if out.status.success() => Ok(()),
-        _ => bail!(
-            "Missing npm package '{0}' install with: 'npm -g install {0}'",
-            package
-        ),
-    }
-}
-
-pub enum Resource<'a> {
-    Program(&'a str),
-    Package(&'a str),
-}
-use Resource::{Package, Program};
-
-impl<'a> Resource<'a> {
-    pub fn exists(&self) -> Result<()> {
-        match *self {
-            Program(name) => program_exists(name),
-            Package(name) => npm_package_exists(name),
-        }
-    }
-}
-
-fn run() -> Result<()> {
-    if let Ok(_) = env::var("CARGO_FEATURE_REGENERATE_CSS") {
-        // Check dependencies
-        Program("npm").exists()?;
-        Program("node").exists().or(Program("nodejs").exists())?;
-        Package("nib").exists()?;
-        Package("stylus").exists()?;
-
-        // Compile stylus stylesheet to css
-        let manifest_dir = env::var("CARGO_MANIFEST_DIR")
-            .chain_err(|| "Please run the script with: 'cargo build'!")?;
-        let theme_dir = Path::new(&manifest_dir).join("src/theme/");
-        let stylus_dir = theme_dir.join("stylus/book.styl");
-
-        if !execs::cmd("stylus")
-            .arg(stylus_dir)
-            .arg("--out")
-            .arg(theme_dir)
-            .arg("--use")
-            .arg("nib")
-            .status()?
-            .success()
-        {
-            bail!("Stylus encountered an error");
-        }
-    }
-    Ok(())
-}
-
-quick_main!(run);
diff --git a/ci/github_pages.sh b/ci/github_pages.sh
index 040ab20a..ea8b95a3 100644
--- a/ci/github_pages.sh
+++ b/ci/github_pages.sh
@@ -11,9 +11,6 @@ if [ "$TRAVIS_PULL_REQUEST" != "false" ] ||
    exit 0
 fi
 
-# Make sure we have the css dependencies
-npm install -g stylus nib 
-
 NC='\033[39m'
 CYAN='\033[36m'
 GREEN='\033[32m'
@@ -21,7 +18,7 @@ GREEN='\033[32m'
 rev=$(git rev-parse --short HEAD)
 
 echo -e "${CYAN}Running cargo doc${NC}"
-cargo doc --features regenerate-css > /dev/null
+cargo doc > /dev/null
 
 echo -e "${CYAN}Running mdbook build${NC}"
 cargo run -- build book-example/