.button{display:inline-block;-webkit-border-radius:3px;-moz-border-radius:3px;cursor:pointer;-webkit-transition:all .2s ease;transition:all .2s ease}.button-flash{-webkit-animation:glowing 1500ms infinite;-moz-animation:glowing 1500ms infinite;-o-animation:glowing 1500ms infinite;animation:glowing 1500ms infinite;opacity:1}@-webkit-keyframes glowing{0%{background-color:#B20000;-webkit-box-shadow:0 0 3px #B20000}50%{background-color:red;-webkit-box-shadow:0 0 40px red}100%{background-color:#B20000;-webkit-box-shadow:0 0 3px #B20000}}