A small preloader I made as a learning experience.
Add a link to the loader.css file in the head of the html document.
<link rel="stylesheet" href="loader.css"> Add the following html:
<div class="rainbow">
<div class="rainbow-container">
<div class="rainbow-color red"></div>
<div class="rainbow-color orange"></div>
<div class="rainbow-color yellow"></div>
<div class="rainbow-color green"></div>
<div class="rainbow-color blue"></div>
<div class="rainbow-color indigo"></div>
<div class="rainbow-color violet"></div>
</div>
</div>MIT