Hiccup syntax for Clojure uses hash maps (curly braces) for attrs, e.g. `{:style {:background "red" :margin "1em"}}` See Reagent which uses Hiccup syntax: http

Hiccup syntax for Clojure uses hash maps (curly braces) for attrs, e.g. `{:style {:background "red" :margin "1em"}}` See Reagent which uses Hiccup syntax: https://reagent-project.github.io/ https://reagent-project.github.io/ (defn simple-component [] [:div [:p "I am a component!"] [:p.someclass "I have " [:strong "bold"] [:span {:style {:color "red"}} " and red "] "text."]])