Split name site into two lines

Hi everyone, I would like to know how I can split the name of my site into two lines. I consulted many forums and applied many of the proposed solutions but none of these work. I would like to keep the same text size for the two lines. I also looked for solutions to change the text and size of the tagline to make it appear as the second line but all the solutions I consulted were not effective. Thanks everyone for the replies.

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