fixed backend field alignment (line wrap)

[thexmanxyz]

Hey, I suggest changing this one line in the admin CSS file to get correct alignment of the fields. IDK if this affects something else but it seems that the particle modal itself and the particle defaults tab should be all.

Before:

After:

Additionally this one also fixes this ugly "mobile" line-wrap.

Before:

After:

This issue happens because the margin: 5px; is not respected within the max-width. Also we create a left-margin for .settings-param-field of 175px which occupies the space but actually we would need 185px. You can verify this in developers tools quite easily. I reduced the max-width to 165px so we consume as much space as we have (165px + 10px occupied by the margin, this is 2 x 5px).