在功能中设置具有自定义大小的主题徽标。php：

function theme_prefix_setup() {

    add_theme_support( \'custom-logo\', array(
        \'height\'      => 100,
        \'width\'       => 400,
        \'flex-width\' => true,
    ) 
);

}
add_action( \'after_setup_theme\', \'theme_prefix_setup\' );

function theme_prefix_the_custom_logo() {

    if ( function_exists( \'the_custom_logo\' ) ) {
        the_custom_logo();
    }

}