plugins/social_share_privacy/public/socialshareprivacy/stylesheets/modules/tumblr.css
.social_share_privacy_area.line .tumblr a {
display: inline-block;
width: 81px;
height: 20px;
margin-right: 20px;
}
.social_share_privacy_area.box .tumblr a {
display: block;
margin: auto;
width: 58px;
height: 58px;
}