* {margin:0; padding:0;}
a * {border: 0;} 
.ScrolltoTop_1 {position:fixed; bottom:25px; right:25px; background:url(../images/stt_1.png) no-repeat; width:57px; height:57px; cursor:pointer; display:none;}
.ScrolltoTop_2 {position:fixed; bottom:25px; right:25px; background:url(../images/stt_2.png) no-repeat; width:58px; height:58px; cursor:pointer; display:none;}
.ScrolltoTop_3 {position:fixed; bottom:25px; right:25px; background:url(../images/stt_3.png) no-repeat; width:69px; height:69px; cursor:pointer; display:none;}
.ScrolltoTop_4 {position:fixed; bottom:25px; right:25px; background:url(../images/stt_4.png) no-repeat; width:38px; height:38px; cursor:pointer; display:none;}
.ScrolltoTop_5 {position:fixed; bottom:25px; right:25px; background:url(../images/stt_5.png) no-repeat; width:40px; height:40px; cursor:pointer; display:none;}
.ScrolltoTop_6 {position:fixed; bottom:25px; right:25px; background:url(../images/stt_6.png) no-repeat; width:69px; height:69px; cursor:pointer; display:none;}
.ScrolltoTop_7 {position:fixed; bottom:25px; right:25px; background:url(../images/stt_7.png) no-repeat; width:69px; height:69px; cursor:pointer; display:none;}
.ScrolltoTop_8 {position:fixed; bottom:25px; right:25px; background:url(../images/stt_8.png) no-repeat; width:69px; height:69px; cursor:pointer; display:none;}
.ScrolltoTop_9 {position:fixed; bottom:25px; right:25px; background:url(../images/stt_9.png) no-repeat; width:69px; height:69px; cursor:pointer; display:none;}
.ScrolltoTop_10 {position:fixed; bottom:25px; right:25px; background:url(../images/stt_10.png) no-repeat; width:69px; height:69px; cursor:pointer; display:none;}
.ScrolltoTop_11 {position:fixed; bottom:25px; right:25px; background:url(../images/stt_11.png) no-repeat; width:65px; height:65px; cursor:pointer; display:none;}
.ScrolltoTop_12 {position:fixed; bottom:25px; right:25px; background:url(../images/stt_12.png) no-repeat; width:65px; height:65px; cursor:pointer; display:none;}
.ScrolltoTop_13 {position:fixed; bottom:25px; right:25px; background:url(../images/stt_13.png) no-repeat; width:69px; height:69px; cursor:pointer; display:none;}
.ScrolltoTop_14 {position:fixed; bottom:25px; right:25px; background:url(../images/stt_14.png) no-repeat; width:57px; height:57px; cursor:pointer; display:none;}
.ScrolltoTop_15 {position:fixed; bottom:25px; right:25px; background:url(../images/stt_15.png) no-repeat; width:56px; height:56px; cursor:pointer; display:none;}
.ScrolltoTop_16 {position:fixed; bottom:25px; right:25px; background:url(../images/stt_16.png) no-repeat; width:70px; height:57px; cursor:pointer; display:none;}
.ScrolltoTop_17 {position:fixed; bottom:25px; right:25px; background:url(../images/stt_17.png) no-repeat; width:62px; height:57px; cursor:pointer; display:none;}
.ScrolltoTop_18 {position:fixed; bottom:25px; right:25px; background:url(../images/stt_18.png) no-repeat; width:54px; height:44px; cursor:pointer; display:none;}
.ScrolltoTop_19 {position:fixed; bottom:25px; right:25px; background:url(../images/stt_19.png) no-repeat; width:65px; height:64px; cursor:pointer; display:none;}
.ScrolltoTop_20 {position:fixed; bottom:25px; right:25px; background:url(../images/stt_20.png) no-repeat; width:65px; height:65px; cursor:pointer; display:none;}
.ScrolltoTop_21 {position:fixed; bottom:25px; right:25px; background:url(../images/stt_21.png) no-repeat; width:65px; height:66px; cursor:pointer; display:none;}
.ScrolltoTop_22 {position:fixed; bottom:25px; right:25px; background:url(../images/stt_22.png) no-repeat; width:65px; height:65px; cursor:pointer; display:none;}
.ScrolltoTop_23 {position:fixed; bottom:25px; right:25px; background:url(../images/stt_23.png) no-repeat; width:65px; height:65px; cursor:pointer; display:none;}
.ScrolltoTop_24 {position:fixed; bottom:25px; right:25px; background:url(../images/stt_24.png) no-repeat; width:54px; height:62px; cursor:pointer; display:none;}