new/edit milestone
There is some distortion in desktop and mobile ui for new/edit milestone page. Fixing the new/edit milestone page for desktop and mobile ui Design background https://uxplanet.org/primary-secondary-action-buttons-c16df9b36150 https://balsamiq.com/learn/articles/button-design-best-practices/ <details> <summary>Screen shots</summary> Before: ![image](https://github.com/go-gitea/gitea/assets/80308335/c8627679-da2d-465f-bc8f-978d7b836919) ![image](https://github.com/go-gitea/gitea/assets/80308335/43b54599-2856-440a-a13c-08bb3cedf35c) After ![image](https://github.com/go-gitea/gitea/assets/80308335/85ca3d32-4842-41bc-8647-aa4222b9cc06) ![image](https://github.com/go-gitea/gitea/assets/80308335/c00e87c4-e64e-4b18-aa42-d26c3942a21b) </details> --------- Co-authored-by: Denys Konovalov <privat@denyskon.de> Co-authored-by: Giteabot <teabot@gitea.io>