.top_desc_id-software-upgrade .but
{
	height: 60px;
	vertical-align: middle;
	line-height: 56px;
	background: #FFF;
	margin: 7px 0.2% 20px;
	padding: 0;
	width: 16%;
}

.top_desc_id-software-upgrade .but IMG
{
	vertical-align: middle;
	max-height: 44px;
	max-width: 95%;
}
@media (max-width: 575px)
{
	.top_desc_id-software-upgrade .but
	{
		width: 45%;
		margin: 2%;
	}
}
@media (min-width: 576px) and (max-width: 767px)
{
	.top_desc_id-software-upgrade .but
	{
		width: 18%;
	}
}
@media (min-width: 768px) and (max-width: 991px)
{
}
@media (min-width: 992px) and (max-width: 1199px)
{
}
@media (min-width: 1200px)
{
}