af/oldcss/sass/_development.scss

.development.page {
	#content_box {
		article {
			section.project {
				@include breakpoint(max-width $bp-small) {
					margin-top: $base-line-height/2;
					border-top: 1px solid hsl(0,0,80);
					padding-top: $base-line-height/2;
					
					h3 {
						line-height: $base-line-height !important;
					}
				}
			}
		}
	}
}