Update code

practice/practice-02/src/index.pug

@@ -1,5 +1,3 @@
-- var welcome_img_path = "./assets/images/welcome/";
-
 doctype html
 html(lang="en")
   head

practice/practice-02/src/layouts/welcome.pug

@@ -1,3 +1,5 @@
+- var welcome_img_path = "./assets/images/welcome/";
+
 section.welcome
   .welcome__banner
     .welcome__banner-container
@@ -23,11 +25,11 @@ section.welcome
       p.welcome__text-box-content People Trust us
     h1.welcome__heading We're
       = " "
-      mark serious
+      span serious
       = " for "
-      mark food
+      span food
       = " & "
-      mark delivery
+      span delivery
       = "."
     p.welcome__description Best cooks and best delivery guys all at your service. Hot tasty food will reach you in 60 minutes.
     form.welcome__search-form(action="#")