.sharethis-wrapper {
    display: table !important;
}

.sharethis-wrapper span {
    display: block !important;
    width: 32px !important;
    margin: 0px 6px 0px 0px !important;
    float: left;
}

span.st_linkedin_custom {
    background-image: url(/sites/default/files/default_images/linkedin-logo.png);
    background-size: auto 15px;
    background-repeat: no-repeat;
    background-position-y: 8px;
    background-position-x: 50%;
    background-color: #0077B5 !important;
}