made a separate reset css sheet

static/css/layout.css

@@ -1,4 +1,4 @@
-@layer pre-load, baseline, overload-1, print;
+@layer pre-load, reset, baseline, overload-1, print;
 
 /*
  * saving this for when doing a table of contents, position: sticky isn't good enough
@@ -13,6 +13,8 @@
 }
  * */
 
+@import url("/static/css/reset.css") layer("reset")
+
 @layer overload-1{
 dt{
   font-weight:normal;

static/css/reset.css

@@ -0,0 +1,3 @@
+* {
+    box-sizing: border-box;
+}