.headimg{   
    background-size: cover !important;
    width:100%;
}


.dental{
    background: url(/TMDCWebsite/img/tmdc_dental1.JPG?2180) 100% 50% no-repeat ;
}

.neuro{
    background: url(/TMDCWebsite/img/tmdc_neuropsychological.JPG?2180) 100% 50%  no-repeat;
}