div.login-socimg {
    background: rgba(0, 0, 0, 0) url("/bitrix/templates/main/images/social.png?1") no-repeat scroll left top / 242px auto;
    display: block;
    float: left;
    height: 40px;
    width: 42px;
    margin: 0 10px;
} 
div.login-socimg.login-od {
    background-position: -187px 0;
    margin-left: 0;
}
div.login-socimg.login-vk {
    background-position: -50px 0;
}
div.login-socimg.login-tw {
    background-position: -95px 0;
}
div.login-socimg.login-fb {
    background-position: -4px 0;
    margin-right: 0;
}