Youzer Set Fonts.

yz-set-fonts.css

/** Global Css */
.widget_bp_core_sitewide_messages .bp-site-wide-message button,
.youzify-main-content .wp-picker-container .wp-picker-clear,
.youzify-main-content .wp-picker-container .wp-color-picker,
.widget_bp_core_members_widget .item-options a,
.youzify-membership-form .youzify-membership-form-cover .form-cover-title,
.youzify .uk-upload-photo .uk-upload-button,
.widget_bp_groups_widget .item-options a,
.youzify-membership-form-item .youzify-membership-item-content label,
.youzify-membership-form-item .youzify-membership-item-content input,
.youzify-membership-social-buttons .youzify-membership-social-title,
.uk-upload-photo .uk-upload-button,
.yzb-head-content .yzb-head-meta,
.youzify-membership-form .youzify-membership-form-message p,
.uk-panel-msg .uk-msg-content p,
.youzify-tool-btn .youzify-tool-name,
.youzify-membership-form .youzify-membership-form-desc,
.youzify-membership-social-buttons li a,
.youzify-membership-form-actions button,
.youzify-membership-form .form-title h2,
.youzify-user-statistics li h3,
[data-youzify-tooltip]:after,
.youzify-membership-forgot-password,
.youzify-items-list-widget,
.youzify-my-account-widget,
.yzb-head-content h2,
.youzify-usermeta li span,
.yzb-head-content h3,
.yzb-account-menu a,
.yzb-author-infos p,
.youzify-dialog-desc,
.widget.buddypress,
.youzify-tooltip:after,
.youzify-membership-link-button,
#sitewide-notice,
.youzify-save-options,
.youzify_msg span,
.youzify-reset-options,
.youzify a.button,
.youzify textarea,
.youzify-membership-form-note,
.uk-msg-head h3,
.youzify select,
.youzify-dialog,
.youzify input,
.youzify-name h2,
.youzify a,
.youzify p,
.uk-popup,
.youzify,
.youzify-membership {
    font-family: 'Open Sans', sans-serif;
}

/** Account **/
.settings-inner-content .options-section-title h2,
.youzify .option-content input:not([type=radio]),
.settings-sidebar .account-menus ul li a,
.youzify-cphoto-options .youzify-upload-photo,
.settings-sidebar .account-menus h2,
.youzify .option-content textarea,
.youzify .option-content select,
.uk-option-item .option-desc,
.youzify-account-header ul li a,
.youzify .action-button,
.youzify-account-head span,
.uk-option-item label,
.youzify-account-head h2,
.yza-item-button,
.youzify-no-content {
    font-family: 'Open Sans', sans-serif;
}

/* Directories */
#yz-directory-search-box form input[type=submit],
#yz-directory-search-box form input[type=text],
#yz-groups-list .item .item-meta span,
#yz-members-list .yzm-user-actions a,
#yz-groups-list .item .item-title a,
#yz-members-list .youzify-fullname,
#yz-members-list .youzify-name,
#yz-groups-list .action a {
    font-family: 'Open Sans', sans-serif;
}

/** Groups **/
.youzify-group-settings-tab textarea,
#send-invite-form .submit input,
.group-members #search-members-form label input,
.youzify-group-settings-tab .youzify-group-submit-form input,
.group-members #search-members-form #members_search_submit,
.youzify-group-settings-tab .youzify-group-field-item input[type=text],
.youzify-group-manage-members-search #search-members-form #members_search,
.youzify-group-manage-members-search #members_search_submit {
    font-family: 'Open Sans', sans-serif;
}

/** Profile **/
.youzify-recent-posts .youzify-post-head .youzify-post-title a,
.youzify-wg-networks.youzify-icons-full-width li a,
.youzify-tab-comment .youzify-comment-excerpt p,
.youzify-profile-navmenu .youzify-navbar-item a,
.youzify-project-content .youzify-project-title,
.youzify-tab-comment .youzify-comment-fullname,
.youzify-post-plus4imgs .youzify-post-imgs-nbr,
.youzify-recent-posts .youzify-post-meta ul li,
.youzify-post-content .youzify-post-title a,
.youzify-tab-comment .youzify-comment-title,
.youzify-tab-post .youzify-post-meta ul li,
.youzify-form .youzify-form-message p,
.youzify-infos-content ul li strong,
.youzify-video-head .youzify-video-title,
.youzify-video-head .youzify-video-desc,
.youzify-tab-post .youzify-post-title a,
.youzify-quote-content blockquote,
.youzify-tab-post .youzify-post-text p,
.youzify-widget .youzify-widget-title,
.youzify-box-head .youzify-box-title,
.youzify .youzify-link-content p,
.pagination .page-numbers,
.youzify-infos-content ul li p,
.youzify-info-msg p strong,
.lb-data .lb-caption,
.lb-data .lb-number,
.youzify-profile-login,
.youzify_msg span,
.youzify-aboutme-name,
.youzify-project-type,
.youzify-quote-owner,
.youzify-box-404 h2,
.youzify-info-msg p,
.youzify-post-type,
.youzify-box-404 p,
.youzify-item-title {
    font-family: 'Open Sans', sans-serif;
}