Team:NEFU China/btop
- returnTop {
_display:none;
position:fixed;
_position:absolute;
z-index:999;
right:15px;
bottom:-200px;
_bottom:auto;
width:36px;
height:65px;
text-indent:-999px;
overflow:hidden;
background-image:url(
);
_background-image:url();
background-repeat:no-repeat;
background-position:0 0;
transition:bottom 0.9s;
-webkit-transition:bottom 0.9s;
-moz-transition:bottom 0.9s;
-o-transition:bottom 0.9s;
}
- returnTop:hover {
background-position:0 -65px; }