used span and style attr

src/log.scad

@@ -56,9 +56,9 @@ module log(level = "INFO", level_color) {
             echo(
                 str( 
                     "<b>",
-                        "<font color='", c, "'>", 
+                        "<span style='color:", c, "'>", 
                             lv, 
-                        "</font>", 
+                        "</span>", 
                     "</b>"
                 )
             );