Pure CSS Slider

Question

So I'm getting acquainted with css3 and I've been trying to find a purely css slider. I finally found one that is exactly as I was looking for on code pen but for some reason when I try the code in localhost or jsfiddle it doesn't work. There is no external files that its accessing as far as I can tell in codepen and there is no jQuery needed. Below I've linked the (working) codepen and jsfiddle. Any ideas why it wont work elsewhere?

codepen

jsFiddle

html

<div class="slider">
  <img class='photo'  src="http://i.imgur.com/zMGSiyl.jpg" alt="" />
  <img class='photo'  src="http://i.imgur.com/soQhb13.jpg" alt="" />
  <img class='photo'  src="http://i.imgur.com/39yOaYB.jpg" alt="" />
  <img class='photo'  src="http://i.imgur.com/tnctKD4.jpg" alt="" />
</div>

css

body{background:#000;}

.slider{
  margin:50px auto;
  width:100%;
  height:300px;
  overflow:hidden;
  position:relative;

}
.photo{
  position:absolute;
  animation:round 16s infinite;
  opacity:0;
  width:100%;

}
@keyframes round{   
  25%{opacity:1;}
  40%{opacity:0;}
} 

img:nth-child(4){animation-delay:0s;}
img:nth-child(3){animation-delay:4s;}
img:nth-child(2){animation-delay:8s;}
img:nth-child(1){animation-delay:12s;}

Answer 1

You may need to use vendor specific keyframes . Codepen is clever and is overcompensating in this instance.

@-webkit-keyframes NAME-YOUR-ANIMATION {
  0%   { opacity: 0; }
  100% { opacity: 1; }
}
@-moz-keyframes NAME-YOUR-ANIMATION {
  0%   { opacity: 0; }
  100% { opacity: 1; }
}
@-o-keyframes NAME-YOUR-ANIMATION {
  0%   { opacity: 0; }
  100% { opacity: 1; }
}
@keyframes NAME-YOUR-ANIMATION {
  0%   { opacity: 0; }
  100% { opacity: 1; }
}

More info http://css-tricks.com/snippets/css/keyframe-animation-syntax/

Answer 2

This works perfectly, please check: jsFiddle Demo . The syntax for the CSS3 animations and the keyframes which was being used in the code was the standard syntax, for eg animation:round 16s infinite; , @keyframes round{ 25%{opacity:1;} 40%{opacity:0;} } and img:nth-child(4){animation-delay:0s;} .

You should instead use -webkit-animation:round 16s infinite;`, `@-webkit-keyframes round{ 25%{opacity:1;} 40%{opacity:0;} } ` and `img:nth-child(4){-webkit-animation-delay:0s;} so that it's browser compatible.

More information on this is available over here .

 body { background: #000; } .slider { margin: 50px auto; width: 100%; height: 300px; overflow: hidden; position: relative; } .photo { position: absolute; -webkit-animation: round 16s infinite; -moz-animation: round 16s infinite; -o-animation: round 16s infinite; animation: round 16s infinite; opacity: 0; width: 100%; } @-webkit-keyframes round { 25% { opacity: 1; } 40% { opacity: 0; } } @-moz-keyframes round { 25% { opacity: 1; } 40% { opacity: 0; } } @-o-keyframes round { 25% { opacity: 1; } 40% { opacity: 0; } } @keyframes round { 25% { opacity: 1; } 40% { opacity: 0; } } img:nth-child(4) { -webkit-animation-delay: 0s; } img:nth-child(3) { -webkit-animation-delay: 4s; } img:nth-child(2) { -webkit-animation-delay: 8s; } img:nth-child(1) { -webkit-animation-delay: 12s; } 

 <div class="slider"> <img class='photo' src="http://i.imgur.com/zMGSiyl.jpg" alt="" /> <img class='photo' src="http://i.imgur.com/soQhb13.jpg" alt="" /> <img class='photo' src="http://i.imgur.com/39yOaYB.jpg" alt="" /> <img class='photo' src="http://i.imgur.com/tnctKD4.jpg" alt="" /> </div>