Improve the visibility of the button of “new [component]”

ref: ED014
### User story

As a participant, I want the “new proposal”, "new debate" and "new initiative" button to be more visible.

*New proposal*

![](https://i.imgur.com/yz5kJTF.png)

*New debate*

![](https://i.imgur.com/fzLz8fP.png)

*New initiative*

![](https://i.imgur.com/wh0afMq.png)

### Related issues
https://meta.decidim.org/processes/roadmap/f/122/proposals/12327