Line break in widgets and hover color

Hello, I would need help in two more things in the Moesia theme:

1) I try to have a line break in the widgets that I create with the SiteOrigin Editor. It is in the section with the pics of our app. However, if I put a
tag or if I hit enter in the text, nothing changes.

2) How can I change the hover color of the buttons with the class “welcome-button” that appear in the first section after the welcome page? I tried with changing the CSS sheet

a:hover {
color: #AAAAAA;
}

or also

.welcome-button .a:hover {
color: #AAAAAA;
}

but nothing works. Thanks for your help!