diff --git a/go.mod b/go.mod
index 6ebc431..42b9b0a 100644
--- a/go.mod
+++ b/go.mod
@@ -7,5 +7,5 @@ require (
 	golang.org/x/crypto v0.0.0-20190621222207-cc06ce4a13d4
 	golang.org/x/net v0.0.0-20190620200207-3b0461eec859
 	humungus.tedunangst.com/r/go-sqlite3 v1.1.3
-	humungus.tedunangst.com/r/webs v0.6.6
+	humungus.tedunangst.com/r/webs v0.6.7
 )
diff --git a/go.sum b/go.sum
index 6d8b6ad..a5bc4f2 100644
--- a/go.sum
+++ b/go.sum
@@ -23,3 +23,5 @@ humungus.tedunangst.com/r/go-sqlite3 v1.1.3 h1:G2N4wzDS0NbuvrZtQJhh4F+3X+s7BF8b9
 humungus.tedunangst.com/r/go-sqlite3 v1.1.3/go.mod h1:FtEEmQM7U2Ey1TuEEOyY1BmphTZnmiEjPsNLEAkpf/M=
 humungus.tedunangst.com/r/webs v0.6.6 h1:qepe+N9waCqLzOwhSws5pxpwSxNxdYRktJB1gY8Q3NQ=
 humungus.tedunangst.com/r/webs v0.6.6/go.mod h1:Ho+nmafD/aUWF7LnH+Yl2/b0ob7f2pCkXm4onteWvLE=
+humungus.tedunangst.com/r/webs v0.6.7 h1:VE556AXIwCVQRraVc36ild+b7ET30aoJNCVykDLqMPo=
+humungus.tedunangst.com/r/webs v0.6.7/go.mod h1:Ho+nmafD/aUWF7LnH+Yl2/b0ob7f2pCkXm4onteWvLE=
diff --git a/web.go b/web.go
index cc3f49c..ea98ce5 100644
--- a/web.go
+++ b/web.go
@@ -21,7 +21,6 @@ import (
 	"html"
 	"html/template"
 	"io"
-	"io/ioutil"
 	"log"
 	notrand "math/rand"
 	"net/http"
@@ -1355,11 +1354,17 @@ func avatate(w http.ResponseWriter, r *http.Request) {
 }
 
 func servecss(w http.ResponseWriter, r *http.Request) {
-	data, _ := ioutil.ReadFile("views" + r.URL.Path)
-	s := css.Process(string(data))
-	w.Header().Set("Cache-Control", "max-age=7776000")
+	fd, err := os.Open("views" + r.URL.Path)
+	if err != nil {
+		http.NotFound(w, r)
+		return
+	}
+	w.Header().Set("Cache-Control", "max-age=0")
 	w.Header().Set("Content-Type", "text/css; charset=utf-8")
-	w.Write([]byte(s))
+	err = css.Filter(fd, w)
+	if err != nil {
+		log.Printf("error filtering css: %s", err)
+	}
 }
 func serveasset(w http.ResponseWriter, r *http.Request) {
 	w.Header().Set("Cache-Control", "max-age=7776000")