Astra_Builder_Base_Dynamic_CSS::prepare_inner_section_advanced_css( string $section_id, string $selector )

		public static function prepare_inner_section_advanced_css( $section_id, $selector ) {

			if ( ! empty( $section_id ) && ! empty( $selector ) ) {
				$width              = astra_get_option(
					$section_id . '-border-width',
					array(
						'top'    => '',
						'right'  => '',
						'bottom' => '',
						'left'   => '',
					) 
				);
				$color              = astra_get_option( $section_id . '-border-color', '' );
				$radius             = astra_get_option(
					$section_id . '-border-radius',
					array(
						'top'    => '',
						'right'  => '',
						'bottom' => '',
						'left'   => '',
					) 
				);
				$css_output_desktop = array(
					$selector => array(
						'border-top-style'           => ! empty( $width['top'] ) ? 'solid' : '',
						'border-right-style'         => ! empty( $width['right'] ) ? 'solid' : '',
						'border-bottom-style'        => ! empty( $width['bottom'] ) ? 'solid' : '',
						'border-left-style'          => ! empty( $width['left'] ) ? 'solid' : '',
						'border-color'               => esc_attr( $color ),
						'border-top-width'           => ! empty( $width['top'] ) ? astra_get_css_value( $width['top'], 'px' ) : '',
						'border-bottom-width'        => ! empty( $width['bottom'] ) ? astra_get_css_value( $width['bottom'], 'px' ) : '',
						'border-left-width'          => ! empty( $width['left'] ) ? astra_get_css_value( $width['left'], 'px' ) : '',
						'border-right-width'         => ! empty( $width['right'] ) ? astra_get_css_value( $width['right'], 'px' ) : '',
						'border-top-left-radius'     => ! empty( $radius['top'] ) ? astra_get_css_value( $radius['top'], 'px' ) : '',
						'border-bottom-right-radius' => ! empty( $radius['bottom'] ) ? astra_get_css_value( $radius['bottom'], 'px' ) : '',
						'border-bottom-left-radius'  => ! empty( $radius['left'] ) ? astra_get_css_value( $radius['left'], 'px' ) : '',
						'border-top-right-radius'    => ! empty( $radius['right'] ) ? astra_get_css_value( $radius['right'], 'px' ) : '',
					),
				);

				$css_output = astra_parse_css( $css_output_desktop );

				$css_output .= self::prepare_advanced_margin_padding_css( $section_id, $selector );

				return $css_output;
			}

			return '';
		}