Reply To: Adjust Header Image to Display on Mobile Devices

Dear William,
Please replace from the given code with previous code that we had provided.
Appearance > CUstomize > Additional CSS

/*for mobile devices only*/
@media (max-width:767px){
   .at-parallax, .inner-main-title{
      background-attachment: scroll !important;
   }
}
/*it would work up to tablet's*/
@media (max-width:992px){
   .at-parallax, .inner-main-title{
      background-attachment: scroll !important;
   }

Best Regards!