html - How to create that background on my page with css -

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this question has answer here:

please me. want create shape on image, on page, should background of section. thank you.

enter image description here

try this

.yourtag {   background: radial-gradient(circle @ 91% 50%, transparent 35%, red 15px);  }

fiddle - https://jsfiddle.net/p0ctco0m/1/


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