@keyframes animate1{0%{left:-100%;}50%,100%{left:100%;}}@keyframes animate2{0%{top:-100%;}50%,100%{top:100%;}}@keyframes animate3{0%{right:-100%;height:1px;}50%,100%{height:2px;right:100%;}}@keyframes animate4{0%{bottom:-100%;}50%,100%{bottom:100%;}}