/**************************************************
			 seven_seg
			**************************************************/
			#seven_seg {
				position: absolute;
				width: 150px;
				height: 155px;
				top: 0;
				left: 120px;
				background-repeat: no-repeat;
				background-size: contain;
				z-index: 5;
				display: none;
			}
			#seven_seg .num1_frame,
			#seven_seg .num2_frame,
			#seven_seg .num3_frame {
				position: absolute;
				width: 25px;
				height: 47px;
				top: 78px;
				background-repeat: no-repeat;
				background-size: 25px 47px;
				overflow: hidden;
			}
			#seven_seg .num1_frame {
				left: 37px;
			}
			#seven_seg .num2_frame {
				left: 62px;
			}
			#seven_seg .num3_frame {
				left: 87px;
			}
			#seven_seg .num {
				width: 25px;
				height: 517px;
				background-repeat: no-repeat;
				background-size: 25px 517px;
			}
			
			/* flashing of seg's number */
			.seg_flash {
				-webkit-animation: seg_flash 0.2s steps(11, start) infinite;
				animation: seg_flash 0.2s steps(11, start) infinite;
			}
			@-webkit-keyframes seg_flash {
				0%		{ -webkit-transform: translateY(0); }
				100%	{ -webkit-transform: translateY(-517px); }
			}
			@keyframes seg_flash {
				0%		{ transform: translateY(0); }
				100%	{ transform: translateY(-517px); }
			}
			
			/* down the seg's board  */
			.seg_down {
				-webkit-animation: seg_down 0.5s linear forwards;
				animation: seg_down 0.5s linear forwards;
			}
			@-webkit-keyframes seg_down {
				0%		{ -webkit-transform: translateY(0); }
				100%	{ -webkit-transform: translateY(155px); }
			}
			@keyframes seg_down {
				0%		{ transform: translateY(0); }
				100%	{ transform: translateY(155px); }
			}
			
			/* up the seg's board  */
			.seg_up {
				-webkit-animation: seg_up 0.5s linear forwards;
				animation: seg_up 0.5s linear forwards;
			}
			@-webkit-keyframes seg_up {
				0%		{ -webkit-transform: translateY(155px); }
				100%	{ -webkit-transform: translateY(0); }
			}
			@keyframes seg_up {
				0%		{ transform: translateY(155px); }
				100%	{ transform: translateY(0); }
			}