Tempo Log Time button

[X y]

Hi!
We currently developing a jira plugin and we want to use the log time button which appears in the my work or the issue screens. We tried to add the 

class="tempo-open-log-work-dialog" to the button which is create that panel but the date part or the worked part can't see properly on the screen. Can you please tell me how can i create a log time button properly in my plugin?

Thanks in advance!
Ro