rendered animation
Only CSS: Pulse Line

1<div class="lines"><div class="line"><div class="panels"><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div></div></div><div class="line"><div class="panels"><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div></div></div><div class="line"><div class="panels"><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div></div></div><div class="line"><div class="panels"><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div></div></div><div class="line"><div class="panels"><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div></div></div><div class="line"><div class="panels"><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div></div></div><div class="line"><div class="panels"><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div></div></div><div class="line"><div class="panels"><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div></div></div><div class="line"><div class="panels"><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div></div></div><div class="line"><div class="panels"><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div></div></div><div class="line"><div class="panels"><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div></div></div><div class="line"><div class="panels"><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div></div></div><div class="line"><div class="panels"><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div></div></div><div class="line"><div class="panels"><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div></div></div><div class="line"><div class="panels"><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div></div></div><div class="line"><div class="panels"><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div></div></div><div class="line"><div class="panels"><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div></div></div><div class="line"><div class="panels"><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div></div></div><div class="line"><div class="panels"><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div></div></div><div class="line"><div class="panels"><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div><div class="panel"></div></div></div></div>