Elements panel
Elements is the palette of things you can add to the page — the standard HTML building blocks plus your own components, laid out as cards. Open it by clicking Elements in the activity bar on the left.

What's in the palette
Components — at the top, your project's own components, plus components from installed packages once they're enabled for the project (see Dependencies ). Project components render a live preview on their card, so you see the real thing before you place it.
Element categories — below, the HTML elements grouped by category in accordion sections. Each card shows a small preview of the element and its tag name.
Type in the Filter elements… box to narrow the palette by name; categories with no matches disappear. Click a category header to collapse or expand it.
Insert by click
On the canvas or in Layers , select the element you want to insert into.
Click a card. The new element lands inside the selection, after its existing children.
With nothing selected, the element is added at the end of the document.
Insert by drag
For an exact placement, drag the card instead:
Press and drag any card toward the canvas.
As you move over the page, an indicator line shows where the element will land — before, after, or inside the element under the cursor.
Drop to insert, or press Esc to cancel.
The new element arrives selected, ready for the Properties panel and Style inspector . Dragging works the same in Edit and Design mode; the other ways to insert — the + affordance between elements and the slash menu — are covered in The canvas .
Inserting adds one element node to the open file — a component card adds an instance tag like
<site-card>
. The format is described in
Components
.
Next
Make your own cards appear here — Working with components
Rearrange what you inserted in the Layers panel