Animazione ciclica tipo battito cardiaco CSS3 From https://paulund.co.uk/create-pulse-effect-with-css3-animation
.button{
display: inline-block;
width: 150px;
padding: 20px;
text-align: center;
background: whiteSmoke;
font-weight: bold;
color: #444;
text-decoration: none;
border: 1px solid #888;
}
@keyframes pulse_animation {
0% { transform: scale(1); }
30% { transform: scale(1); }
40% { transform: scale(1.08); }
50% { transform: scale(1); }
60% { transform: scale(1); }
70% { transform: scale(1.05); }
80% { transform: scale(1); }
100% { transform: scale(1); }
}
.pulse {
animation-name: pulse_animation;
animation-duration: 5000ms;
transform-origin:70% 70%;
animation-iteration-count: infinite;
animation-timing-function: linear;
}