@media screen and ( min-width:800px){
.sya{
width: 1000px;
height: auto;
}
}

@media screen and (min-width:580px) and ( max-width:800px){
.sya{
width: 790px;
height: auto;
}
}

@media screen and ( max-width:579px){
.sya{
width: 98%;
height: auto;
}
}