How to wrap a fields or other elements in div block? I want to wrap these elements in one div (this div should be before div class = row) but I don't know where to add this div



Example: 

&lt;div class="col col-lg-4 col-md-4 col-sm-4 col-xs-6 "&gt;
            &lt;div class = "my_custom&gt; 
             &lt;div class="views-field views-field-title"&gt;
             &lt;div class="views-field views-field-field-image"&gt;
             &lt;div class="views-field views-field-field-product-reference"&gt;
             &lt;div class="views-field views-field-commerce-price"&gt;
            &lt;/div&gt;
        &lt;/div&gt;


I am using Bootstrap theme and views_bootstrap module.
In case you want a simpler answer with no coding needed just use Views Fieldset.
So install the module, add your row class on the view (Format > Settings > Row Class). 

Then add a fieldset (Fields > Add > Global: Fieldset), in the settings of the fieldset choose div and to the HTML classes add the column classes. Don't forget to to go to Fields > Rearrange and put your fields in the fieldset group.

That's it.