Hi,
please make this changes this may work well.
some simple e.g. we tested using inspect tools-
size of icon: 48px
line-height: 70px
circle-width: 70px
circle-heigh: 100px
size of icon: 30px
line-height: 58px
circle-width: 58px
circle-heigh: 70px
line-height have to greater or equal to circle width, height
we just added sample, please adjust the settings.
Have a Great Day,
Thank you