diff --git a/_static/custom.css b/_static/custom.css
new file mode 100644
index 00000000..b0e83df1
--- /dev/null
+++ b/_static/custom.css
@@ -0,0 +1,6 @@
+.bd-main .bd-content .bd-article-container {
+  max-width: 100%;  /* default is 60em */
+}
+.bd-page-width {
+  max-width: 100%;  /* default is 88rem */
+}