I need to add the following bootstrap attribute (col-md-6) to a div which by default is already printed with an existing class:
<div class="images" style="opacity: 1;">
You will say to do it directly but it is a PHP template that I still cannot find and I am tired of looking for it in the package. Therefore I intend it to be as follows by means of a JavaScript sequence.
<div class="col-md-6 images" style="opacity: 1;">