body {
    /*background-image: url('../images/bgosi.jpg') !important;*/
    /*background-size: cover;
    background-color: #50d8af;*/
    background-image: url(../images/lab2.jpg);
    background-size: 100%;
    background-position: left center;
    background-repeat: no-repeat;
    
}

.con-estilo {
    -webkit-box-shadow: 0 19px 38px rgba(0, 0, 0, 0.30), 0 15px 12px rgba(0, 0, 0, 0.22);
    -moz-box-shadow: 0 19px 38px rgba(0, 0, 0, 0.30), 0 15px 12px rgba(0, 0, 0, 0.22);
    -ms-box-shadow: 0 19px 38px rgba(0, 0, 0, 0.30), 0 15px 12px rgba(0, 0, 0, 0.22);
    -o-box-shadow: 0 19px 38px rgba(0, 0, 0, 0.30), 0 15px 12px rgba(0, 0, 0, 0.22);
    box-shadow: 0 19px 38px rgba(0, 0, 0, 0.30), 0 15px 12px rgba(0, 0, 0, 0.22);
}