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Try these codes to your Functions.php

1. We add the customizer setting.

   function theme_customize_register( $wp_customize ) { $wp_customize->add_setting( 'main_color', array( 'default' => '#ffffff', 'transport' => 'refresh', 'sanitize_callback' => 'sanitize_hex_color', ) ); add_action( 'customize_register', 'theme_customize_register' );

2. It then integrates the customizer and attribute in CSS file.

   function theme_get_customizer_css() { ob_start(); $main_color = get_theme_mod( 'main_color', '' ); if ( ! empty( $main_color ) ) { ?> .contentDetails a { color: ; } <?php } $css = ob_get_clean(); return $css; }

And for CSS and the customizer connection.

  function theme_enqueue_styles() {
    wp_enqueue_style( 'theme-styles', get_stylesheet_uri() );
    $custom_css = theme_get_customizer_css();
    wp_add_inline_style( 'theme-styles', $custom_css );
  }
  add_action( 'wp_enqueue_scripts', 'theme_enqueue_styles' );

Try these codes to your Functions.php

We add the details of customizer setting.

function theme_customize_register( $wp_customize ) {
      $wp_customize->add_setting( 'main_color', array(
        'default'   => '#ffffff',
        'transport' => 'refresh',
        'sanitize_callback' => 'sanitize_hex_color',
      ) );
add_action( 'customize_register', 'theme_customize_register' );

It then integrates the customizer and attribute in CSS file.

function theme_get_customizer_css() {
    ob_start();
    $main_color = get_theme_mod( 'main_color', '' );
    if ( ! empty( $main_color ) ) {
      ?>
      .contentDetails a {
      color: <?php echo $main_color; ?>;
      }
    <?php
  }
  $css = ob_get_clean();
  return $css;
}

And for CSS and the customizer connection.

function theme_enqueue_styles() {
  wp_enqueue_style( 'theme-styles', get_stylesheet_uri() );
  $custom_css = theme_get_customizer_css();
  wp_add_inline_style( 'theme-styles', $custom_css );
}
add_action( 'wp_enqueue_scripts', 'theme_enqueue_styles' );

Try these codes to your Functions.php

1. We add the customizer setting.

   function theme_customize_register( $wp_customize ) { $wp_customize->add_setting( 'main_color', array( 'default' => '#ffffff', 'transport' => 'refresh', 'sanitize_callback' => 'sanitize_hex_color', ) ); add_action( 'customize_register', 'theme_customize_register' );

2. It then integrates the customizer and attribute in CSS file.

   function theme_get_customizer_css() { ob_start(); $main_color = get_theme_mod( 'main_color', '' ); if ( ! empty( $main_color ) ) { ?> .contentDetails a { color: ; } <?php } $css = ob_get_clean(); return $css; }

3. And for CSS and the customizer connection.

   function theme_enqueue_styles() { wp_enqueue_style( 'theme-styles', get_stylesheet_uri() ); $custom_css = theme_get_customizer_css(); wp_add_inline_style( 'theme-styles', $custom_css ); } add_action( 'wp_enqueue_scripts', 'theme_enqueue_styles' );

Try these codes to your Functions.php

1. We add the customizer setting.

   function theme_customize_register( $wp_customize ) { $wp_customize->add_setting( 'main_color', array( 'default' => '#ffffff', 'transport' => 'refresh', 'sanitize_callback' => 'sanitize_hex_color', ) ); add_action( 'customize_register', 'theme_customize_register' );

2. It then integrates the customizer and attribute in CSS file.

   function theme_get_customizer_css() { ob_start(); $main_color = get_theme_mod( 'main_color', '' ); if ( ! empty( $main_color ) ) { ?> .contentDetails a { color: ; } <?php } $css = ob_get_clean(); return $css; }

And for CSS and the customizer connection.

  function theme_enqueue_styles() {
    wp_enqueue_style( 'theme-styles', get_stylesheet_uri() );
    $custom_css = theme_get_customizer_css();
    wp_add_inline_style( 'theme-styles', $custom_css );
  }
  add_action( 'wp_enqueue_scripts', 'theme_enqueue_styles' );

Try these codes to your Functions.php

function theme_customize_register( $wp_customize ) {
          $wp_customize->add_setting( 'main_color', array(
            'default'   => '#ffffff',
            'transport' => 'refresh',
            'sanitize_callback' => 'sanitize_hex_color',
          ) );
        add_action( 'customize_register', 'theme_customize_register' );

Later, you must add these codes.

function theme_get_customizer_css() {
    ob_start();
    $main_color = get_theme_mod( 'main_color', '' );
    if ( ! empty( $main_color ) ) {
    ?>
    .contentDetails a {
    color: <?php echo $main_color; ?>;
    }
    <?php
    }
    $css = ob_get_clean();
    return $css;
    }

And the end.

function theme_enqueue_styles() {
      wp_enqueue_style( 'theme-styles', get_stylesheet_uri() );
      $custom_css = theme_get_customizer_css();
      wp_add_inline_style( 'theme-styles', $custom_css );
    }
    add_action( 'wp_enqueue_scripts', 'theme_enqueue_styles' );

Try these codes to your Functions.php

1. We add the customizer setting.

   function theme_customize_register( $wp_customize ) { $wp_customize->add_setting( 'main_color', array( 'default' => '#ffffff', 'transport' => 'refresh', 'sanitize_callback' => 'sanitize_hex_color', ) ); add_action( 'customize_register', 'theme_customize_register' );

2. It then integrates the customizer and attribute in CSS file.

   function theme_get_customizer_css() { ob_start(); $main_color = get_theme_mod( 'main_color', '' ); if ( ! empty( $main_color ) ) { ?> .contentDetails a { color: ; } <?php } $css = ob_get_clean(); return $css; }

3. And for CSS and the customizer connection.

   function theme_enqueue_styles() { wp_enqueue_style( 'theme-styles', get_stylesheet_uri() ); $custom_css = theme_get_customizer_css(); wp_add_inline_style( 'theme-styles', $custom_css ); } add_action( 'wp_enqueue_scripts', 'theme_enqueue_styles' );