How to transform logo text to lowercase or capitalize?

In Olympus theme is used uppercase text size in the logo title and subtitle:

To transform this text into text capitalize looking, we recommend adding the following CSS code to Customize > Additional CSS.

• for the logo title text to be capitalized:

div.title-block .logo-title {  text-transform: capitalize;}

• for the logo text to be lowercase:

div.title-block .logo-title{	 text-transform: lowercase;}

• for the logo subtitle text to be capitalized:

div.title-block .sub-title {  text-transform: capitalize;}

• for the logo subtext to be lowercase:

div.title-block .sub-title {  text-transform: lowercase;}

You can also use both codes for the logo title and subtitle simultaneously. For example: