How to make one circle inside of another using CSS

Question

I am trying to make one circle inside of another circle using css, but I am having an issue making it completely centered. I am close, but still not there. Any ideas?

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Answer 1

See How I have positioned the Divs, Just border-radius should do the Job

.outer{width:500px;height:500px;background:#f00;border-radius:50%;position:relative;top:0;left:100;}
.inner{width:250px;height:250px;background:#000;border-radius:50%;position:absolute;top:125;left:125;}



   


      



      

    

DEMO