1. Go to shopify edit code
2. Copy this code and add below code in your base.css file
Code snippet for center the header nav menu
HTML
/* code written by aditya */
/* code for center the header nav menu */
@media screen and (min-width: 990px){
.header--middle-left {
grid-template-areas: 'heading navigation icons';
grid-template-columns: 1fr auto 1fr;
column-gap: 2rem;
}
}