<?php
$wp_customize->add_section('timeline', array(
  'title' => __('Section : Timeline','bordered'),
  'priority' => 5,
  'panel' => 'panel_bordered'
));

// Timeline Sections Title

$wp_customize->add_setting('timeline_title', array(
  'sanitize_callback'  => 'esc_attr',
  'default' => __('Timeline','bordered'),
  'transport' => 'refresh'
));
$wp_customize->add_control('timeline_title', array(
'section' => 'timeline',
'label' => __('Timeline Title','bordered'),
'type' => 'text',
'priority' => 1
));

// Timeline Sections Items

$wp_customize->add_setting( 'timeline_items', array(
  'sanitize_callback' => 'customizer_repeater_sanitize'
));
$wp_customize->add_control( new Customizer_Repeater( $wp_customize, 'timeline_items', array(
'label'   => esc_html__('Timeline Item','bordered'),
'section' => 'timeline',
'priority' => 2,
'customizer_repeater_image_control' => false,
'customizer_repeater_title_control' => true,
'customizer_repeater_subtitle_control' => true,
'customizer_repeater_text_control' => true,
'customizer_repeater_shortcode_control' => true,
'customizer_repeater_icon_control' => true,
'customizer_repeater_link_control' => false,
'customizer_repeater_repeater_control' => false
) ) );

$wp_customize->selective_refresh->add_partial( 'timeline_title', array(
  'selector' => '#timeline-title', 
) );

?>