.overFlowY {
	height: 390px;
	overflow: auto;
}
[id^='btn'] {
	background-color: #D8D8D8;
	padding: 0 8px;
    border-radius: 5px;
    -webkit-transition: all ease-in 0.3s;
    -moz-transition: all ease-in 0.3s;
    transition: all ease-in 0.3s;
}
[id^='btn'].selected {
	background-color: #32FF85;
    box-shadow: 2px 2px 3px rgba(0,0,0,0.3);
}
input {
	width: 100px;
	text-align: center;
}
.right {
	background-color: #61D57C;
}
.wrong {
	background-color: #DC6969;
}