layouts/banner/banner-layout-one.php

Change Banner background to fix and scale:

Original:

    <div class="item" <?php if( get_header_image() ) { ?> style="background-image: url( '<?php header_image(); ?>' );background-size: cover;background-position: center 72px;"<?php } ?>>

Modified:

    <div class="item" <?php if( get_header_image() ) { ?> style="background-image: url( '<?php header_image(); ?>' );background-size: 100% 500px;background-position: center 72px;"<?php } ?>>