mobile responsive css

hello experts ,

I am using below code to show a gif spinner but it is not mobile responsive . please suggest a code so that the below code works for small screens also.

.processing .blockOverlay { background-image:url(‘https://sab1000.de/wp-content/uplo/Spinner-1.7s-200px.gif’) !important; background-position: center 30% !important; background-repeat: no-repeat !important; }

Thanks

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