How can I resize my logo of the HanumanSTUDIES ?

How to resize image?

इमेज कैसे छोटा बड़ा करे ?

Hello Every one this is Jeetendra kumar Mehta, confused related to the arrangement of HanumanSTUDIES logo as the while I placed the logo in the setting option it covered the whole screen on the web-site. 

Here is the logo

Can any one resize it for me for my website.

or if you have any solution to this problem please let me know in the comment section.

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