add csp

app/javascript/elements/scroll_to.js

@@ -0,0 +1,10 @@
+export default class extends HTMLElement {
+  connectedCallback () {
+    this.selector = document.getElementById(this.dataset.selectorId)
+
+    this.addEventListener('click', () => {
+      this.selector.scrollIntoView({ behavior: 'smooth', block: 'start' })
+      history.replaceState(null, null, `#${this.dataset.selectorId}`)
+    })
+  }
+}