@elainestoneimp:
1. I see that most of the element in you site is already center and if you are talking about the content inside your page, we don’t have control on it. It depends on the type of content you add and it’s alignment.
2. For breadcrumb, you can add the following css in “Appearance => Customize => Theme Options => Custom CSS Options” box:
#breadcrumb-list .wrapper {
text-align: center;
}
#breadcrumb-list span {
display: inline-block;
float: none;
}
3. For Social icons background and color, you can change the color code in the following css as per your need and then add it in “Appearance => Theme Options => Custom CSS Options” box:
.site .widget_catchresponsive_social_icons a.genericon {
background-color: #d7d7d7;
border-color: #b6b6b6;
color: #777;
}
4. I see that you have added in social widget, search and menu in Featured Widget Content. To make the search “left justified” and the custom menu “right justified”, you need to re-arrange the widgets. First, you need to add in Search and then Social Icons and after that menu. Then only I can send you css to do that.