Topbar adjustment

Hi, my client wants to make the topbar a bit bigger and the social icons a bit bigger, can you send me through the CSS that I need to adjust to make this happen? The theme is installed here: http://bsnvet.net.au/

You can increase the size of social icons by adding the following CSS in wp-admin >> appearance >> customize >> additional CSS

.topbar .socialicons a {
  font-size:18px;
}

You can keep chaging 18px to your required size.