Thanks Asya for the reply.
I did not understand the css code where should I enter it?
If I insert the css code in the personalize css section the gallery no longer works.
.bwg_image_description, .bwg_image_description * {
color: #B0B0B0 !important;
font-family: Ubuntu;
font-size: 13px;
font-weight: bold;
word-break: break-word;
https://www.dropbox.com/s/b44fw0ow08bbgvu/Schermata%202020-12-03%20alle%2014.27.10.png?dl=0
https://www.dropbox.com/s/l2xwueyo37l26ar/Schermata%202020-12-03%20alle%2014.21.37.png?dl=0