Animace
.element {
animation: pulse 5s infinite;
}
@keyframes pulse {
0% {
background-color: #001F3F;
}
100% {
background-color: #FF4136;
}
}
Responzivita přes media
/* When the browser is at least 600px and above */
@media screen and (min-width: 600px) {
.element {
/* Apply some styles */
}
}