This is a very specific question, that I can\'t find any documented evidence to support, but have rather a lot of empirical evidence, although only based on a single phone.<
I also encountered the same issue (Webview + stack browser Android 4.2.2 / Archos101 Xenon)
Fixed it by removing the background property from :
.circle {
width: 100px;
height: 100px;
background: rgba(255,255,255,0.75);
border: 5px solid rgba(255, 255, 255, 0.75);
border-radius: 50px;
}
and by adapting the width of the border property
.circle {
width: 100px;
height: 100px;
border: 50px solid rgba(255, 255, 255, 0.75);
border-radius: 50px;
}
I hope this can be helpful.