Hello Z.,
Awaiting the beta-style margin/padding for component and deployment, two possible workarounds are:
1/ We can change font size, as:
<style>
root {
FontSize 25
}
arrow {
FontSize 25
Padding 50
Margin 50
}
</style>
[Click to see on PlantUML server]
2/ Or, We can just add horizontal tabulation (‘\t’), as:
component B
component C
B "D" -right-> "U" C : \tshared kernel\t\t
[Click....]
If that can help,
Regards,
Th.