diff --git a/css/PICO-LICENSE.md b/css/PICO-LICENSE.md
new file mode 100644
index 0000000..94af9b1
--- /dev/null
+++ b/css/PICO-LICENSE.md
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2019-2024 Pico
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/site.hs b/site.hs
index d6d3d5d..d22e79f 100644
--- a/site.hs
+++ b/site.hs
@@ -18,7 +18,7 @@ pandocOptions = defaultHakyllWriterOptions {writerHTMLMathMethod = MathML }
 main :: IO ()
 main =
   hakyllWith hakyllConfig $ do
-    match "css/*" $ do
+    match "css/*.css" $ do
       route idRoute
       compile compressCssCompiler
     match "papers/*" $ do