Product Name Size

I am using the WooCommerce plugin with Boldgrid for a client, they insist I use Boldgrid. However I am unable to alter the product name’s size and the name appears with a blue line through it. The problem is the font-size & font-weight appear as indicated below with lines through them and the yellow “invalid property value” triangle next to them.

font-size: px !important;
font-weight: !important;

On the non-boldgrid version the font-size appears as:

font-size: 24px;

In both cases the class name is “product_title entry-title”.

Does anyone have any idea of how to fix this?