Adding parenthesis to ordered lists

1. Parent ol selector gets:

   ol {
     counter-reset: list;
   }

2. List items get:

   ol li {
     list-style-type: none;
     position: relative;
   }
   

3. Finally use a :before pseudo selector on the list items to customize and position the output:

   ol li:before {
     counter-increment: list;
     content: counter(list,decimal) ") ";
     position: absolute;
     left: -20px;
   }