Fashionistas theme

Does anyone know how to change which side the sidebar is on for the theme Fashionistas by Athemes?

I was told to change what is bolded below…

/* LAYOUT
———————————————– */
.container {
width: 980px;
}
.content-area {
width: 100%;
float: left;
}
.site-content {
margin: 0 290px 0 0;
}
.site-sidebar {
width: 250px;
float: left;
margin: 0 0 0 -250px;
}