.bounce1{animation:bounce1 15s linear infinite alternate both}.bounce2{animation:bounce2 15s linear infinite alternate both}.bounce3{animation:bounce3 25s linear infinite alternate both}.bounce4{animation:bounce4 25s linear infinite alternate both}@keyframes bounce1{0%{top:0;left:50px}to{top:100vh;left:100vw}}@keyframes bounce2{0%{bottom:0;right:90px}to{bottom:100vh;right:100vw}}@keyframes bounce3{0%{top:20%;right:20%}25%{top:90%;right:90%}75%{top:0;right:60%}to{top:20%;right:20%}}@keyframes bounce4{to{top:20%;right:20%}75%{top:90%;right:90%}25%{top:0;right:60%}0%{top:20%;right:20%}}