<html> <head> </head> <body> <div class="arrow_box">按按</div> </body> <style> .arrow_box { width:40px; height:40px; animation: glow 800ms ease-out infinite alternate; } @keyframes glow { 0% { border-color: #393; box-shadow: 0 0 5px rgba(0,255,0,.2), inset 0 0 5px rgba(0,255,0,.1), 0 1px 0 #393; } 100% { border-color: #6f6; box-shadow: 0 0 20px rgba(0,255,0,.6), inset 0 0 10px rgba(0,255,0,.4), 0 1px 0 #6f6; } } </style> </html>
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