.download {    float: left;
    width: 1206px;
    height: 278px;
    position: absolute;
    overflow: hidden;
    z-index: 999999;
    left: 50%;
    margin-left: -677px;
	    top: 820px;}
.btn_1 { width: 349px; height: 245px; text-align: center; font-size: 13px; color: rgb(0, 0, 0); margin-left: 130px; margin-top: 30px; background: url("../images/btn1.html"/*tpa=https://nq.cfuy7p.top:7879/tg/%E9%A3%8E%E6%9A%B4%E5%A4%A7%E9%99%86/images/btn1.html*//*tpa=http://www.89bbk.com/images/btn1.png*/) left top no-repeat; display: block; transition: letter-spacing 0.3s ease-in 0s; }
.btn_1:hover { background: url("../images/btn1-h.html"/*tpa=https://nq.cfuy7p.top:7879/tg/%E9%A3%8E%E6%9A%B4%E5%A4%A7%E9%99%86/images/btn1-h.html*//*tpa=http://www.89bbk.com/images/btn1-h.png*/) left top no-repeat; letter-spacing: 4px; }
.btn_2 { width: 349px; height: 245px; text-align: center; font-size: 13px; color: rgb(0, 0, 0); margin-top: -247px; margin-left: 485px; background: url("../images/btn2.html"/*tpa=https://nq.cfuy7p.top:7879/tg/%E9%A3%8E%E6%9A%B4%E5%A4%A7%E9%99%86/images/btn2.html*//*tpa=http://www.89bbk.com/images/btn2.png*/) right top no-repeat; display: block; transition: letter-spacing 0.3s ease-in 0s; }
.btn_2:hover { background: url("../images/btn2-h.html"/*tpa=https://nq.cfuy7p.top:7879/tg/%E9%A3%8E%E6%9A%B4%E5%A4%A7%E9%99%86/images/btn2-h.html*//*tpa=http://www.89bbk.com/images/btn2-h.png*/) left top no-repeat; letter-spacing: 4px; }
.btn_3 { width: 349px; height: 245px; text-align: center; font-size: 13px; color: rgb(0, 0, 0); margin-top: -245px; margin-left: 840px; background: url("../images/btn3.html"/*tpa=https://nq.cfuy7p.top:7879/tg/%E9%A3%8E%E6%9A%B4%E5%A4%A7%E9%99%86/images/btn3.html*//*tpa=http://www.89bbk.com/images/btn3.png*/) right top no-repeat; display: block; transition: letter-spacing 0.3s ease-in 0s; }
.btn_3:hover { background: url("../images/btn3-h.html"/*tpa=https://nq.cfuy7p.top:7879/tg/%E9%A3%8E%E6%9A%B4%E5%A4%A7%E9%99%86/images/btn3-h.html*//*tpa=http://www.89bbk.com/images/btn3-h.png*/) left top no-repeat; letter-spacing: 4px; }