## Bug Report ### Steps Create a placeholder `Segment` with `Icon` in the header. Set the `Icon`'s `name` to `line graph`. ### Expected Result The `line graph` `Icon` should be centered in the `Segment`. (something like the `pie graph` `Icon` that can be seen in the image below)  ### Actual Result The `line graph` `Icon` sticks to the left of the segment and a white box appears on the right side of the element.  ### Version 2.1.3 ### Testcase for some reason, [the code sandbox](https://codesandbox.io/s/semantic-ui-react-forked-4kkl3g?file=/index.js) does not seem to run as expected