#GridPage   { width:100%;padding:0; }
#GridLeft   { display: none; }
#SiteGrid   { margin-top: 10px; }

@media (max-width: 1400px)
{
    #SiteGridContainer  { max-width:980px; margin:0 auto; }
}

.mainVideo              { margin: 0 auto; width: 670px;height: 370px; }
.mainVideo iframe       { width:100%;height: 100%; }

@media (min-width: 768px) and (max-width:1024px){
    .mainVideo          { width: 53%;height: 28vw; }
}

@media (max-width: 767px){
    .mainVideo          { width: 82.5vw;height: 46vw; }
}