Astra_Customizer_Sanitizes::sanitize_responsive_slider( array|number $val, object $setting )

		public static function sanitize_responsive_slider( $val, $setting ) {

			$input_attrs = array();
			if ( isset( $setting->manager->get_control( $setting->id )->input_attrs ) ) {
				$input_attrs = $setting->manager->get_control( $setting->id )->input_attrs;
			}

			$responsive = array(
				'desktop' => '',
				'tablet'  => '',
				'mobile'  => '',
			);
			if ( is_array( $val ) ) {
				$responsive['desktop'] = is_numeric( $val['desktop'] ) ? $val['desktop'] : '';
				$responsive['tablet']  = is_numeric( $val['tablet'] ) ? $val['tablet'] : '';
				$responsive['mobile']  = is_numeric( $val['mobile'] ) ? $val['mobile'] : '';
			} else {
				$responsive['desktop'] = is_numeric( $val ) ? $val : '';
			}

			foreach ( $responsive as $key => $value ) {
					$value              = isset( $input_attrs['min'] ) && ( ! empty( $value ) ) && ( $input_attrs['min'] > $value ) ? $input_attrs['min'] : $value;
					$value              = isset( $input_attrs['max'] ) && ( ! empty( $value ) ) && ( $input_attrs['max'] < $value ) ? $input_attrs['max'] : $value;
					$responsive[ $key ] = $value;
			}

			return $responsive;
		}