/*  
Theme Name:   Mon thème enfant 
Theme URI:    https://monsite.com 
Description:  Description de mon thème enfant 
Author:       Alex  
Author URI:   https://wpmarmite.com 
Template:     twentytwentyfour  
Version:      0.1.0 
*/

header {
    position: fixed;
    width: 100%;
    z-index: 3;
}