Joomla! Template JV Shoes - Item Support

Good afternoon I have inconveniences on the menu is different in several browsers, Firefox looks great but in chrome , safari , space is lost.

You can look at http://tienda.cda80.com/
How do I correct ?
You are very slow to respond
Hi! slider is not responsive.
You can look at http://tienda.cda80.com/
How do I correct ?
Item Name:
JV Shoes
Author:
Sales:
27
Created:
2015-01-12
Updated:
2016-01-19
Item Version:
1.2.1