::-webkit-scrollbar-track {
	-webkit-box-shadow: inset 0 0 6px rgba(0,0,0,0.3);
	border-radius: 10px;
	background-color: #F5F5F5;
}
::-webkit-scrollbar {
	width: 15px;
	background-color: #F5F5F5;
}
::-webkit-scrollbar-thumb {
	border-radius: 10px;
	-webkit-box-shadow: inset 0 0 6px rgba(0,0,0,.3);
	background-color: #555;
}
.doc-so-thanh-chu {
	max-width: 600px;
	margin: auto;
	background-color: #FFF;
	font-family: Arial;
}
.form {
	border: 1px solid #ccc;
	margin: 15px;
	padding: 15px;
	border-radius: 6px;
}
#txtNumber,#btnSubmit, #reset {
	padding: 5px 10px;
	border-radius: 3px;
	border: 1px solid #1078b7;
	margin: 5px 0px;
	font-size: 15px;
}
#btnSubmit {
	background: #1078b7;
	color: #FFF;
}
#btnSubmit:hover,
#reset:hover {
	opacity: 0.8;
	cursor: pointer;
}