Links in footer underlined, but not the icons in the footer

Hi there,

The new website is starting to look very good :-)

Small question, I hope ;-):
I have used this code to have links underlined

.entry-content a { text-decoration: underline; }
.avia_textblock  a {  text-decoration: underline; }
div.textwidget p a {  text-decoration: underline; }
a.aviablank.avia-testimonial-link{  text-decoration: underline; }
div.toggle_content.invers-color p a {  text-decoration: underline; }
#footer .widget a {  text-decoration: underline; }

But now also my social icons in the footer are underlined. Can you help me remove the line under the icons?

Hope to hear from you!

maaike