how to make margin-left auto increment with bootstrap 3.0.0

Question

i need add margin-left into .card class "style" element auto generate margin-left every time post page input.

my jquery version 1.12.4

my idea is

if .card css style margin-left 0 and with 479px set position 0
else set position margin-left 479px 
else set position mergin-left ...px

becuse im new learning javascript, so im trying help ask question with this code

user_19165531 · Answer

i found solution.

$(function () {
$(".card").css("margin-left", function (i) {
  return i * 479;
});

});