.bird{will-change:background-position;opacity:.8;background-image:url(/bird-cells.svg);background-size:auto 100%;width:88px;height:125px;animation-name:fly-cycle;animation-timing-function:steps(10,end);animation-iteration-count:infinite}@media (max-width:639px){.bird{width:44px;height:63px}.bird-container--two,.bird-container--six,.bird-container--seven{display:none}}.bird--one{animation-duration:1s;animation-delay:-.5s}.bird--two{animation-duration:.9s;animation-delay:-.75s;transform:scale(.9)}.bird--three{animation-duration:1.25s;animation-delay:-.25s;transform:scale(.8)}.bird--four{animation-duration:1.1s;animation-delay:-.5s;transform:scale(.85)}.bird--five{animation-duration:1.05s;animation-delay:-.6s;transform:scaleX(-1)}.bird--six{animation-duration:.95s;animation-delay:-.8s;transform:scale(-.85,.85)}.bird--seven{animation-duration:1.15s;animation-delay:-.4s;transform:scale(-.9,.9)}.bird--eight{animation-duration:1.25s;animation-delay:-.1s;transform:scale(-.8,.8)}.bird-container{will-change:transform;animation-name:fly-right-one;animation-timing-function:linear;animation-iteration-count:infinite;position:absolute;top:15%;left:-10vw;transform:scale(0)translate(-10vw)}.bird-container--one{animation-duration:10s;animation-delay:0s}.bird-container--two{animation-duration:11s;animation-delay:1s;top:20%}.bird-container--three{animation-duration:9.6s;animation-delay:4.5s;top:10%}.bird-container--four{animation-duration:11.5s;animation-delay:5.25s;top:25%}.bird-container--five{animation-name:fly-left-one;animation-duration:10.5s;animation-delay:2s;top:12%}.bird-container--six{animation-name:fly-left-one;animation-duration:12s;animation-delay:5s;top:22%}.bird-container--seven{animation-name:fly-left-one;animation-duration:10.5s;animation-delay:8s;top:18%}@keyframes fly-cycle{to{background-position:-900px 0}}@keyframes fly-right-one{0%{transform:translate(-15vw)translateY(-2vh)scale(.5)}20%{transform:translate(10vw)translateY(2vh)scale(.55)}40%{transform:translate(35vw)translateY(0)scale(.6)}60%{transform:translate(60vw)translateY(4vh)scale(.65)}80%{transform:translate(85vw)translateY(2vh)scale(.7)}to{transform:translate(110vw)translateY(0)scale(.75)}}@keyframes fly-left-one{0%{transform:translate(110vw)translateY(-2vh)scale(.5)}20%{transform:translate(85vw)translateY(2vh)scale(.55)}40%{transform:translate(60vw)translateY(0)scale(.6)}60%{transform:translate(35vw)translateY(4vh)scale(.65)}80%{transform:translate(10vw)translateY(2vh)scale(.7)}to{transform:translate(-15vw)translateY(0)scale(.75)}}