Simple code for particle effect background for a webpage using Javascript and CSS
Just copy the code from the html and scss files and paste into the the html and scss files of your web page respectively. The main code for the randomization of particles and the size and animation is written in the scss file while the html file just invokes the property. Note: the particle-container class can also be assigned to a predefined div tag in your website, you will just need to include the multiple particle div tags inside your original div tag as well.