How to show avia layout builder items bigger

I believe that Nikko’s approach is the best method for someone with reduced visual acuity. Everything is enlarged, so that the fonts etc. are also easier to read.

But if you like to enlarge only those alb sings you can input some css to the admin area by child-theme functions.php
this is a kind of standard ( without your alb settings) that i often use with enfold:

// im Admin bereich das Eingabefeld des quick css verbreitern
function admin_head_mod() {
  echo '<style type="text/css">
  #avia_quick_css .avia_description {float: none;margin-bottom: 20px !important;padding-left: 0 !important;width: 98%}
  #avia_quick_css .avia_control {float: left;max-width: 98% !important;width: 98% !important}
  .avia_footer_links li {float: left;padding-right: 20px}
  .avia_footer .avia_footer_save {float: left}
  .avia_reset {display: none !important }
  #avia_options_page { max-width: 3000px!important}
  .avia-modal-toggle-container.avia-modal-toggle-ready.avia-modal-section_headers a.avia-modal-toggle-title { padding: 2px; margin: 3px 12px; font-weight: normal; background: #a3c0ed}
  .shortcode_insert_button { height: 100px; width: 140px;}
  .shortcode_insert_button img { opacity: 1; width: 60%;}
  </style>';
}
add_action('admin_head', 'admin_head_mod');

it removes the reset button – that it can not be used accidentically.
it enlarges the Enfold Options Screen in its width.
The Quick css Input field is set to 98% width of that container.
it highlighted the “toggle headings” but make them smaller

The shortcode_insert_button are now unfortunately only available in 40×40 resolution, which makes them blurred by enlarging them.