You can mix PHP and Javascript... 1 2 <br/>3 .appearance_page_custom-header #headimg {<br/>4 border: none;<br/>5 -webkit-box-sizing: border-box;<br/>6 -moz-box-sizing: border-box;<br/>7 box-sizing: border-box;<br/>8 }<br/>9 Source: twentythirteen/custom-header.php, line 143 and you can mix PHP and CSS.
Everyone is different Every client has different needs. Every team has different tools. Every project is unique. It’s very cumbersome to pass a project made by a developer to another developer.
The problems we had We have a team of 8 developers. That means lot of different people with very different coding styles. We couldn’t move across projects quickly and be agile and dynamic.
HAML haml.info A small language which compiles to HTML, which fundamental principle is: “Markup should be beautiful” HAML makes markup templates faster to write and easier to read.
SASS sass-lang.com An extension of CSS3 which compiles to CSS and adds nested rules, variables and mixins. Compass is a SASS framework which adds many mixins for browser compatibility.
CoffeeScript coffeescript.org A little language that compiles to JavaScript, which main motto is: CoffeeScript takes the good parts of it and makes you write better, safer and faster code. “It’s just JavaScript!”