@charset "utf-8";
.imagenfacebook {
	max-width:250px;
	width:100%;
}


.imagenesmain {
	max-width:450px;
	width:100%;
}
#TOP {
	position: fixed;
	z-index: 1010;
	overflow: visible;
	width: 100%;
	height: 150px;
	top: 0%;
}


@media (max-width: 800px) and (min-width: 0px) {
	
	#TOP {
	position: relative;
	z-index: 1010;
	overflow: visible;
	width: 100%;
	height: 150px;
	top:-250px;
}
	
}
<tr>
            <td><div align="center"><video src="IV FESTA DA VECINANZA/IV FESTA VECINANZA.mp4"width="640" height="480" poster="IV FESTA DA VECINANZA/salcedo_festa_comuneiros.jpg" controls></video></div></td>
            
          
          </tr>