Hi there,
you have this CSS:
.inside-article, .sidebar .widget, .comments-area {
border-right: 2px solid rgba(0, 0, 0, 0.07);
border-top: 2px solid rgba(0, 0, 0, 0.07);
border-left: 2px solid rgba(0, 0, 0, 0.07);
border-bottom: 2px solid rgba(0, 0, 0, 0.07);
box-shadow: 0 0 3px rgba(232, 234, 237, 0.5);
border-radius: 15px;
}
Change it to:
.inside-article, .sidebar .widget, .comments-area, .gen-sidebar-nav nav {
border-right: 2px solid rgba(0, 0, 0, 0.07);
border-top: 2px solid rgba(0, 0, 0, 0.07);
border-left: 2px solid rgba(0, 0, 0, 0.07);
border-bottom: 2px solid rgba(0, 0, 0, 0.07);
box-shadow: 0 0 3px rgba(232, 234, 237, 0.5);
border-radius: 15px;
}