我正在创建自己的主题Wordpress，但是我为主题设计编写的CSS根本没有被应用。它以样式保存。css，我在我的函数中应用了以下内容。php文件：

function letters_files() {
    wp_enqueue_style(\'style\',get_stylesheet_uri(),NULL, microtime() );
    wp_enqueue_style(\'custom-google-fonts\', \'https://fonts.googleapis.com/css?family=Amatic+SC|Comfortaa|Cutive+Mono|Dancing+Script|Open+Sans|Roboto\');
}

add_action(\'wp_enqueue_scrips\',\'letters_files\');

function letters_features() {
    add_theme_support(\'title-tag\');
    register_nav_menu(\'FloatingHeaderMenu\', \'Floating Header Menu\');
    register_nav_menu(\'footerLocationOne\', \'Footer Nav Menu (Footer Menu 1)\');
    register_nav_menu(\'footerLocationTwo\', \'Legal Footer Menu (Footer Menu 2)\');
}

add_action(\'after_setup_theme\', \'letters_features\');

/*
  Theme Name: Letter Theme
  Author: me
  Version: 1.0
*/

body{
    background-color: green;
    text-align: center;
    font-family: "Courier", arial;
}