Use Fira Mono as header font

[stormcloud266]

Steps to complete

1. Download Fira Mono 700 weight
2. Add a 'fonts' folder inside the assets folder
3. Move the Fira Mono woff and woff2 files into the fonts folder
4. Import the fonts using @font-face at the top of the style.css file. Example:

   @font-face {
   font-family: FontName;
   src: url('path/filename.woff2') format('woff2'), 
   url('path/filename.woff') format('woff');
   }

5. Add Fira Mono to the beginning of the headers font-family property. Example:

   h1,
   h2,
   h3,
   h4,
   h5,
   h6 {
   font-family: 'Fira Mono', 'Courier New', Courier, monospace;
   }

[mayuri-dhote]

@stormcloud266 the last part do we have to add this in style.css? i am almost done with everything except the last part Add Fira Mono to the beginning of the headers font-family property.

[mayuri-dhote]

@stormcloud266 please review