Where change background color on Logancee template ?

Hi,

I'm customing the Home Glasses template, I would like to change background color for button. When I'm changing the source code on my browser I know I have to change this line : background-color:#

But I can't in which folder is it :


*,body,h1,h2,h3,h4,h5,h6,.h1,.h2,.h3,.h4,.h5,.h6,#left_column .title_block a,#rightvar_column .title_block a,.block .title_block a,.block h4 a,#category_blog_block_left .title_block a,.price.product-price,.old-price.product-price{
font-family:"Montserrat"
,sans-serif;}
#new_comment_form .title,#sdssearch_block_top .btn.button-search,.button.button-small,.button.button-medium,
.button.exclusive-medium:hover, .button.exclusive-medium:hover span,.button.ajax_add_to_cart_button:hover span,
#home-page-tabs > li.active a, #home-page-tabs > li a:hover,
.top-pagination-content ul.pagination li.active > span span, .bottom-pagination-content ul.pagination li.active > span span,
.cart_navigation .button-exclusive:hover, .cart_navigation .button-exclusive:focus, .cart_navigation .button-exclusive:active,
.fancybox-skin .fancybox-close,.setting_dropdown .setting_content .currency-box li.selected a, .setting_dropdown .setting_content .currency-box li:hover a,
.block-top-01 .bottom a, .block-top-02 .bottom a,.banner-group.home_simple .flex-banner-description,.sidebar_boxed #categories_block_left .title_block,
#attributes .attribute_list .label_radio:hover, #attributes .attribute_list .label_radio.checked,#add_to_cart .add-to-cart-button,
div.products div.product .p-actions > div > a:hover,div.product .quick-view,
.shopping_cart_container .cart_block a:hover,#currencies-block-top ul li.selected, #currencies-block-top ul li.selected a,
#languages-block-top ul li.selected, #languages-block-top ul li.selected span,#layered_block_left ul.size-group li:hover,
#layered_block_left .ui-slider-horizontal .ui-slider-handle,#homepage-slider .bx-wrapper .bx-controls-direction a:hover:before,
.ie8 #homepage-slider .bx-wrapper .bx-controls-direction a:before,#new_comment_form .title,
.navbar-inverse .navbar-toggle:hover, .navbar-inverse .navbar-toggle:focus,.footer-container{
background-color:#333
}


Please find attached screenshot