ss

.button { background-color: #004A7F; -webkit-border-radius: 10px; border-radius: 10px; border: none; color: #FFFFFF; cursor: pointer; display: inline-block; font-family: Arial; font-size: 20px; padding: 5px 10px; text-align: center; text-decoration: none; } @-o-keyframes glowing { 0% { background-color: #B20000; box-shadow: 0 0 3px #B20000; } 50% { background-color: #FF0000; box-shadow: 0 0 40px #FF0000; } 100% { background-color: #B20000; box-shadow: 0 0 3px #B20000; } } @keyframes glowing { 0% { background-color: #B20000; box-shadow: 0 0 3px #B20000; } 50% { background-color: #FF0000; box-shadow: 0 0 40px #FF0000; } 100% { background-color: #B20000; box-shadow: 0 0 3px #B20000; } } .button { -webkit-animation: glowing 1500ms infinite; -moz-animation: glowing 1500ms infinite; -o-animation: glowing 1500ms infinite; animation: glowing 1500ms infinite; } Click me!

Click me!

Click me!