The theme provides various Preloaders. If you want to show the preloader while loading the site then you can show it on your website. There are 6 preloaders in the premium version.
Go to Appearance >> Customizer >> General Settings >> Preloader
You need to enable the preloader to show and can disable it anytime.
You can change the color of the first and second preloader styles with respect to the theme skin color.
First Preloader Style with different theme skin color
Second Preloader Style with different theme skin color