div.mod_black {color:#FFF; border-top:1px solid transparent; border-bottom:1px solid transparent; background-position:center; background-size:cover; background-attachment: fixed; width:100%}
div.mod_white {color:#000; border-top:1px solid transparent; border-bottom:1px solid transparent; background-position:center; background-size:cover; background-attachment: fixed; width:100% }
div.mod_main_tresc {max-width:1200px; margin:0 auto; font-family: 'roboto'; font-weight: 300; border:0px solid red; height:100%; overflow:auto}

@media only screen and (min-width: 770px) {
   table#start_mod {height:500px}
}

@media only screen and (max-width: 770px) {
  div#start_mod {background-size:100%; background-repeat:no-repeat;background-position:top;}
  table#start_mod {border:0px solid red; heig2ht:300px; margin-top:60px }
  table#start_mod img {width:35px; height:74px; margin-top:-25px; }
}

@media only screen and (max-height: 700px) and (min-width:770px)  {
  table#start_mod img {width:80px; height:169px; margin-top:-155px}
}

@media only screen and (max-height: 500px) and (min-width:770px) {
  table#start_mod img {width:60px; height:127px; margin-top:-195px}
}