How to set logo in admin configuration tab in Magento 2

Hello Friends!!!
In this article, we will learn how we can add a logo in the admin configuration tab for our custom module.
To achieve the required result, we will follow the below steps:

1. We will create a CSS file named configtab.css inside the app/code/Vendor/Module/view/adminhtml/web/css directory.

.admin__page-nav.wk-config-tab-class._collapsed._show ._collapsible strong:before {
  content: "";
  background: url(../images/configtab/logo.png) no-repeat scroll 0 0 transparent;
  width: 100%;
  height: 26px;
  display: inline-block;
  vertical-align: bottom;
}
.admin__page-nav.wk-config-tab-class._collapsed._show ._collapsible strong {
  font-size: 0;
}

In the above CSS code, in background property, we have used logo image file URL. The logo.png is exist inside the app/code/Vendor/Module/view/adminhtml/web/images/configtab directory.

2. Now, we will add the .wk-config-tab-class CSS class in the class attribute of the tab tag in the app/code/Vendor/Module/etc/adminhtml/system.xml file as the following image: