CSS animation not working when directly copied from demo - css

Question

I am trying to use a CSS (buzz out) animation as can be seen here.
Works perfectly in the demo, I have copied the relevant CSS and can't get it to work on a website so I even made a simple jsFiddle and it still doesn't work.
Please can someone point out what I am evidently missing as this is all the CSS seems to contain and I am a bit baffled to how it is working with the same style declaration on the demo but not in the jsFiddle.
Code snippet included below as well as at jsFiddle.
[class^="hvr-"] {
/* display: inline-block; */
/* vertical-align: middle; */
margin: .4em;
padding: 1em;
cursor: pointer;
background: #e1e1e1;
text-decoration: none;
color: #666;
-webkit-tap-highlight-color: rgba(0,0,0,0);
}
.hvr-buzz-out {
display: inline-block;
vertical-align: middle;
-webkit-transform: translateZ(0);
transform: translateZ(0);
box-shadow: 0 0 1px rgba(0, 0, 0, 0);
-webkit-backface-visibility: hidden;
backface-visibility: hidden;
-moz-osx-font-smoothing: grayscale;
}
.hvr-buzz-out:hover, .hvr-buzz-out:focus, .hvr-buzz-out:active {
-webkit-animation-name: hvr-buzz-out;
animation-name: hvr-buzz-out;
-webkit-animation-duration: 0.75s;
animation-duration: 0.75s;
-webkit-animation-timing-function: linear;
animation-timing-function: linear;
-webkit-animation-iteration-count: 1;
animation-iteration-count: 1;
}
Buzz Out

Answer 1

You also need the #keyframes that define the animation:
#-webkit-keyframes hvr-buzz-out {
10% {
-webkit-transform: translateX(3px) rotate(2deg);
transform: translateX(3px) rotate(2deg);
}
20% {
-webkit-transform: translateX(-3px) rotate(-2deg);
transform: translateX(-3px) rotate(-2deg);
}
30% {
-webkit-transform: translateX(3px) rotate(2deg);
transform: translateX(3px) rotate(2deg);
}
40% {
-webkit-transform: translateX(-3px) rotate(-2deg);
transform: translateX(-3px) rotate(-2deg);
}
50% {
-webkit-transform: translateX(2px) rotate(1deg);
transform: translateX(2px) rotate(1deg);
}
60% {
-webkit-transform: translateX(-2px) rotate(-1deg);
transform: translateX(-2px) rotate(-1deg);
}
70% {
-webkit-transform: translateX(2px) rotate(1deg);
transform: translateX(2px) rotate(1deg);
}
80% {
-webkit-transform: translateX(-2px) rotate(-1deg);
transform: translateX(-2px) rotate(-1deg);
}
90% {
-webkit-transform: translateX(1px) rotate(0);
transform: translateX(1px) rotate(0);
}
100% {
-webkit-transform: translateX(-1px) rotate(0);
transform: translateX(-1px) rotate(0);
}
}
#keyframes hvr-buzz-out {
10% {
-webkit-transform: translateX(3px) rotate(2deg);
transform: translateX(3px) rotate(2deg);
}
20% {
-webkit-transform: translateX(-3px) rotate(-2deg);
transform: translateX(-3px) rotate(-2deg);
}
30% {
-webkit-transform: translateX(3px) rotate(2deg);
transform: translateX(3px) rotate(2deg);
}
40% {
-webkit-transform: translateX(-3px) rotate(-2deg);
transform: translateX(-3px) rotate(-2deg);
}
50% {
-webkit-transform: translateX(2px) rotate(1deg);
transform: translateX(2px) rotate(1deg);
}
60% {
-webkit-transform: translateX(-2px) rotate(-1deg);
transform: translateX(-2px) rotate(-1deg);
}
70% {
-webkit-transform: translateX(2px) rotate(1deg);
transform: translateX(2px) rotate(1deg);
}
80% {
-webkit-transform: translateX(-2px) rotate(-1deg);
transform: translateX(-2px) rotate(-1deg);
}
90% {
-webkit-transform: translateX(1px) rotate(0);
transform: translateX(1px) rotate(0);
}
100% {
-webkit-transform: translateX(-1px) rotate(0);
transform: translateX(-1px) rotate(0);
}
}
[class^="hvr-"] {
/* display: inline-block; */
/* vertical-align: middle; */
margin: .4em;
padding: 1em;
cursor: pointer;
background: #e1e1e1;
text-decoration: none;
color: #666;
-webkit-tap-highlight-color: rgba(0,0,0,0);
}
.hvr-buzz-out {
display: inline-block;
vertical-align: middle;
-webkit-transform: translateZ(0);
transform: translateZ(0);
box-shadow: 0 0 1px rgba(0, 0, 0, 0);
-webkit-backface-visibility: hidden;
backface-visibility: hidden;
-moz-osx-font-smoothing: grayscale;
}
.hvr-buzz-out:hover, .hvr-buzz-out:focus, .hvr-buzz-out:active {
-webkit-animation-name: hvr-buzz-out;
animation-name: hvr-buzz-out;
-webkit-animation-duration: 0.75s;
animation-duration: 0.75s;
-webkit-animation-timing-function: linear;
animation-timing-function: linear;
-webkit-animation-iteration-count: 1;
animation-iteration-count: 1;
}
Buzz Out
They were also in the CSS file above the code you already had.