.table_teclado tr td
{
	background: #555555;
	color: #FFF;
	padding: 10px 20px;
	cursor: pointer;
	border-radius: 8px;
	font-family: sans-serif;
	border: 5px solid #000000;
    max-width: 20px;
	position: relative;
}

.table_teclado tr td:hover
{
	background: #333333;
}

.btn_delete
{
	position: absolute;
	left: .35em;
	bottom: .15em;
	width: 55px;
}