.down-arrow{animation:jumpInfinite 1.5s infinite;border:2px solid;border-radius:2px;height:30px;left:49.85%;position:absolute;top:800px;width:0}.down-arrow:after{border-bottom:4px solid;border-radius:4px;border-right:4px solid;content:" ";height:16px;left:-8px;position:absolute;top:14px;transform:rotate(45deg);width:16px}@keyframes jumpInfinite{0%{margin-top:0}50%{margin-top:20px}to{margin-top:0}}