.alterna-bg {
    background-color: #f2f2f2;
margin: 10px;
-webkit-box-shadow: 0px 0px 27px -10px rgba(0,0,0,0.12); 
box-shadow: 0px 0px 27px -10px rgba(0,0,0,0.12);
}

td img {
    max-height: 320px;
    width: auto;
}

table { 
border-collapse: collapse; 
border-left: 3px solid #ffffff;
}


td + td,
th + th { border-left: 3px solid #ffffff; }
tr + tr { border-top: 3px solid #ffffff; }