Resize Multi Select buttons

[domiowa]

Hello,

I'm building a new Form for Nitnex in SharePoint 2013 (it will be upgraded this year to 2019)
I have to use multi for some fields, but I would like to know if there is a way to resise these elements:

As you see, there are two small columns and one big space for two buttons with a small text in it,

There is a way to reduce the size of these buttons and to increase the size of the columns?

Many thanks for your help

[MillaZ]

@cecilia-penha could you perhaps have a look at this question?

[Aleximo · Accepted solution]

hey @domiowa ,

add the following css to ur settings (u can change the 100px to any width u would like):

.nf-lookup-addremove button {width: 100px !important;}