How to add a horizontal line to a template

video1.0<iframe src="https://www.loom.com/embed/cb474960c28c4f07a18998c1ef2f3996" frameborder="0" width="1366" height="1024" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>10241366Loomhttps://www.loom.com10241366https://cdn.loom.com/sessions/thumbnails/cb474960c28c4f07a18998c1ef2f3996-00001.gif73.384How to add a horizontal line to a template