^^&&^^

Edit File: skin-classic.php

<?php
namespace ElementorPro\Modules\Posts\Skins;

use Elementor\Controls_Manager;
use Elementor\Group_Control_Box_Shadow;

if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly
}

class Skin_Classic extends Skin_Base {

protected function _register_controls_actions() {
		parent::_register_controls_actions();

add_action( 'elementor/element/posts/classic_section_design_layout/after_section_end', [ $this, 'register_additional_design_controls' ] );
	}

public function get_id() {
		return 'classic';
	}

public function get_title() {
		return esc_html__( 'Classic', 'elementor-pro' );
	}

public function register_additional_design_controls() {
		$this->start_controls_section(
			'section_design_box',
			[
				'label' => esc_html__( 'Box', 'elementor-pro' ),
				'tab' => Controls_Manager::TAB_STYLE,
			]
		);

$this->add_responsive_control(
			'box_border_width',
			[
				'label' => esc_html__( 'Border Width', 'elementor-pro' ),
				'type' => Controls_Manager::DIMENSIONS,
				'size_units' => [ 'px' ],
				'range' => [
					'px' => [
						'min' => 0,
						'max' => 50,
					],
				],
				'selectors' => [
					'{{WRAPPER}} .elementor-post' => 'border-style: solid; border-width: {{TOP}}{{UNIT}} {{RIGHT}}{{UNIT}} {{BOTTOM}}{{UNIT}} {{LEFT}}{{UNIT}}',
				],
			]
		);

$this->add_responsive_control(
			'box_border_radius',
			[
				'label' => esc_html__( 'Border Radius', 'elementor-pro' ),
				'type' => Controls_Manager::SLIDER,
				'size_units' => [ 'px', '%' ],
				'range' => [
					'px' => [
						'min' => 0,
						'max' => 200,
					],
				],
				'selectors' => [
					'{{WRAPPER}} .elementor-post' => 'border-radius: {{SIZE}}{{UNIT}}',
				],
			]
		);

$this->add_responsive_control(
			'box_padding',
			[
				'label' => esc_html__( 'Padding', 'elementor-pro' ),
				'type' => Controls_Manager::DIMENSIONS,
				'size_units' => [ 'px' ],
				'range' => [
					'px' => [
						'min' => 0,
						'max' => 50,
					],
				],
				'selectors' => [
					'{{WRAPPER}} .elementor-post' => 'padding: {{TOP}}{{UNIT}} {{RIGHT}}{{UNIT}} {{BOTTOM}}{{UNIT}} {{LEFT}}{{UNIT}}',
				],
			]
		);

$this->add_responsive_control(
			'content_padding',
			[
				'label' => esc_html__( 'Content Padding', 'elementor-pro' ),
				'type' => Controls_Manager::DIMENSIONS,
				'size_units' => [ 'px' ],
				'range' => [
					'px' => [
						'min' => 0,
						'max' => 50,
					],
				],
				'selectors' => [
					'{{WRAPPER}} .elementor-post__text' => 'padding: {{TOP}}{{UNIT}} {{RIGHT}}{{UNIT}} {{BOTTOM}}{{UNIT}} {{LEFT}}{{UNIT}}',
				],
				'separator' => 'after',
			]
		);

$this->start_controls_tabs( 'bg_effects_tabs' );

$this->start_controls_tab( 'classic_style_normal',
			[
				'label' => esc_html__( 'Normal', 'elementor-pro' ),
			]
		);

$this->add_group_control(
			Group_Control_Box_Shadow::get_type(),
			[
				'name' => 'box_shadow',
				'selector' => '{{WRAPPER}} .elementor-post',
			]
		);

$this->add_control(
			'box_bg_color',
			[
				'label' => esc_html__( 'Background Color', 'elementor-pro' ),
				'type' => Controls_Manager::COLOR,
				'selectors' => [
					'{{WRAPPER}} .elementor-post' => 'background-color: {{VALUE}}',
				],
			]
		);

$this->add_control(
			'box_border_color',
			[
				'label' => esc_html__( 'Border Color', 'elementor-pro' ),
				'type' => Controls_Manager::COLOR,
				'selectors' => [
					'{{WRAPPER}} .elementor-post' => 'border-color: {{VALUE}}',
				],
			]
		);

$this->end_controls_tab();

$this->start_controls_tab( 'classic_style_hover',
			[
				'label' => esc_html__( 'Hover', 'elementor-pro' ),
			]
		);

$this->add_group_control(
			Group_Control_Box_Shadow::get_type(),
			[
				'name' => 'box_shadow_hover',
				'selector' => '{{WRAPPER}} .elementor-post:hover',
			]
		);

$this->add_control(
			'box_bg_color_hover',
			[
				'label' => esc_html__( 'Background Color', 'elementor-pro' ),
				'type' => Controls_Manager::COLOR,
				'selectors' => [
					'{{WRAPPER}} .elementor-post:hover' => 'background-color: {{VALUE}}',
				],
			]
		);

$this->add_control(
			'box_border_color_hover',
			[
				'label' => esc_html__( 'Border Color', 'elementor-pro' ),
				'type' => Controls_Manager::COLOR,
				'selectors' => [
					'{{WRAPPER}} .elementor-post:hover' => 'border-color: {{VALUE}}',
				],
			]
		);

$this->end_controls_tab();

$this->end_controls_tabs();

$this->end_controls_section();
	}
}