.header_weldom {
    width: 100% ; 
    height: 200px; 
    background-image:url('https://easytoretail-demo.gutenberg.agency/visuels_gun/EASYCONNECT/header_weldom.png');
    background-repeat: no-repeat; 
    background-size: contain; 
    background-position: top;
}

@media only screen and (max-device-width: 500px){
  .header_weldom {
    width: 100% !important; 
    height: 130px !important; 
    background-image:url('https://easytoretail-demo.gutenberg.agency/visuels_gun/EASYCONNECT/header_weldom_mobile.jpeg') !important;
    background-repeat: no-repeat !important; 
    background-size: contain !important; 
    background-position: top !important;
  }
}