.numbk_layer{
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	z-index: 9999;
	display: none;
}
.numbk_mask{
	position: absolute;
	width: 100%;
	height: 100%;
	z-index: 499;
}
.numbk_actionsheet{
	position: absolute;
	bottom: 0;
	left: 0;
	width: 100%;
	background: rgba(0,0,0,0.6);
	user-select: none;
    -ms-user-select: none;
    z-index: 500;
    display: none;
}
.numbk_items{
    width: 100%;
    margin: auto;
    padding: 18px 18px 10px 18px;
    border-radius: 5px;
	-webkit-box-sizing: border-box;
	-moz-box-sizing: border-box;
	box-sizing: border-box;
	list-style: none;
	overflow: hidden;
}
.numbk_items li{
    width: 20%;
    height: 50px;
    line-height: 50px;
    text-align: center;
    background: #f5f5f5;
    border-radius: 5px;
    font-weight: bold;
    float: left;
    box-shadow: 0px 2px 1px #7d7d7d;
    color: #1b50a2;
    font-size: 20px;
    cursor: pointer;
}
.numbk_items .numbk_num{
	margin: 1.66% 3.3% 0 0;
}
.numbk_items .numbk_func{
    width: 30%;
    margin: 1.66% 0;
    color: #fff;
}
.numbk_items .numbk_exit{
	background: #F44336;
}
.numbk_items .numbk_del{
	background: #ff9800;
}
.numbk_items .numbk_clear{
	background: #2196F3;
}
.numbk_items .numbk_sure{
	background: #4CAF50;
}
.numbk_items .numbk_screen{
	width: 100%;
	margin-bottom: 1.66%;
	padding: 0 10px;
	text-align: right;
    overflow: hidden;
	-webkit-box-sizing: border-box;
	-moz-box-sizing: border-box;
	box-sizing: border-box;
}
.numbk_items li:not(.numbk_screen):active{
    box-shadow:0px -2px 1px #7d7d7d;
}