An if conditional doesn't make a programming language. You need recursion to have Turing completeness. CSS already has all sorts of conditionals that are if()

An if conditional doesn't make a programming language. You need recursion to have Turing completeness. CSS already has all sorts of conditionals that are if() in disguise! For instance a selector like .foo means "if the class is foo then select this style block'. CSS is thoroughly condition-driven already.