ATTR-005: attribute set twice

Error: the page doesn't build until this is fixed.

Browsers keep the first of two equal attributes and drop the other without a word, so one of them never takes effect.

Fails

page(title: "Shoes", description: "All our running shoes, from light racers to trail shoes.") {
  h1 "Shoes"
  div(class: "card", class: "featured") { p "Runner X" }
}

error[ATTR-005]: `class` is set twice
 --> page.hypra:3:22
  |
3 |   div(class: "card", class: "featured") { p "Runner X" }
  |                      ^^^^^
  = docs: https://hypralang.dev/rules/attr-005/

1 error, 0 warnings

Fixed

page(title: "Shoes", description: "All our running shoes, from light racers to trail shoes.") {
  h1 "Shoes"
  div(class: "card featured") { p "Runner X" }
}