.bubble{position:absolute;width:20px;height:20px;background-color:rgba(255,255,255,.7);border-radius:50%;animation:bubble-move 3s infinite ease-out;display:flex;align-items:center;justify-content:center;font-size:10px;font-weight:700;color:#25d366}.bubble:nth-child(1){top:-20px;left:-20px;animation-delay:0s}.bubble:nth-child(2){top:-10px;right:-20px;animation-delay:.5s}.bubble:nth-child(3){bottom:-20px;left:-10px;animation-delay:1s}.bubble:nth-child(4){bottom:-10px;right:-10px;animation-delay:1.5s}.bubble:nth-child(5){top:-30px;left:10px;animation-delay:2s}