random image placeholder
<!-- gray image 350 width, 150 height -->
<img src="https://via.placeholder.com/350x150">
<!-- random pics 200*300 -->
<img src="https://picsum.photos/200/300">
<!-- random pics square -->
<img src="https://picsum.photos/200">
<!--
link for more
https://picsum.photos/
https://placeholder.com/
-->