@keyframes dot{33%{transform:translateY(-2em)}66%{transform:translateY(-1em)}}@keyframes tips-dot-in{0%{transform:translate3d(0,-20px,0);opacity:0}to{transform:translateZ(0);opacity:1}}@keyframes tips-dot-out{0%{transform:translateZ(0);opacity:1}to{transform:translate3d(0,-20px,0);opacity:0}}.file-preview{width:100%;height:100%;background:#fafafa;position:fixed}.file-wrap{height:100%}