How to style the 6th diva?

Question

PHP

Hello,
There are a number of divs

<div class="fieldset"></div>
<div class="fieldset"></div>
<div class="fieldset"></div>
<div class="fieldset"></div>
<div class="fieldset"></div>
<div class="fieldset"></div>
<div class="fieldset"></div>

How to set a specific style for the 2nd and 6th, for example?

Answer 1

.fieldset:nth-child(6) {...}
on or with jquery:

$(document).ready(function(){
  $(".fieldset:eq(6)").addclass(".newclass"); // добавить CSS класс
  // или
  $(".fieldset:eq(6)").css({"background":"eee"}); // закрасить 6 блок серым
});

Answer 2

:nth-child

Answer 3

<div class="fieldset"></div>
<div class="class"></div>
<div class="fieldset"></div>
<div class="fieldset"></div>
<div class="fieldset"></div>
<div class="class"></div>
<div class="fieldset"></div>

what is the problem?

Answer 4

<div class="fieldset"></div>
<div class="fieldset another-class1"></div>
<div class="fieldset"></div>
<div class="fieldset"></div>
<div class="fieldset"></div>
<div class="fieldset another-class2"></div>
<div class="fieldset"></div>