CSS animation-delay timing - css

Question

I took this example code from JSFiddle and played with it, but there is code confusing me
.backgroundimg {
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
position: absolute;
top: 0;
left: 0;
height: 100%;
width: 100%;
}
#back5 {
background: url("http://duananhalotus.com/upload/album/0904234.jpg") no-repeat center fixed;
z-index: -1;
}
#back4 {
background: url("http://www.chinadaily.com.cn/world/images/attachement/jpg/site1/20120806/d4bed9d534551189e67329.jpg") no-repeat center fixed;
z-index: -1;
}
#back3 {
background: url("https://amazingslider.com/wp-content/uploads/2012/12/dandelion.jpg") no-repeat center fixed;
z-index: -1;
}
#back2 {
background: url("https://cdn.pixabay.com/photo/2013/04/06/11/50/image-editing-101040_960_720.jpg") no-repeat center fixed;
z-index: -1;
}
#back1 {
background: url("http://www.gettyimages.com/gi-resources/images/Embed/new/embed2.jpg") no-repeat center fixed;
z-index: -1;
}
#keyframes backgroundchangeFadeInOut {
0% {
opacity:1;
}
17% {
opacity:1;
}
25% {
opacity:0;
}
92% {
opacity:0;
}
100% {
opacity:1;
}
}
#-webkit-keyframes backgroundchangeFadeInOut {
0% {
opacity:1;
}
17% {
opacity:1;
}
25% {
opacity:0;
}
92% {
opacity:0;
}
100% {
opacity:1;
}
}
#backgroundchange div:nth-of-type(1) {
animation-delay: 8s;
-webkit-animation-delay: 8s;
}
#backgroundchange div:nth-of-type(2) {
animation-delay: 6s;
-webkit-animation-delay: 6s;
}
#backgroundchange div:nth-of-type(3) {
animation-delay: 4s;
-webkit-animation-delay: 4s;
}
#backgroundchange div:nth-of-type(4) {
animation-delay: 2s;
-webkit-animation-delay: 2s;
}
#backgroundchange div:nth-of-type(5) {
animation-delay: 0;
-webkit-animation-delay: 0;
}
#backgroundchange div {
animation-name: backgroundchangeFadeInOut;
animation-timing-function: ease-in-out;
animation-iteration-count: infinite;
animation-duration: 8s;
-webkit-animation-name: backgroundchangeFadeInOut;
-webkit-animation-timing-function: ease-in-out;
-webkit-animation-iteration-count: infinite;
-webkit-animation-duration: 8s;
}
<div class="inner">
<div id="backgroundchange">
<div class="backgroundimg" id="back1"></div>
<div class="backgroundimg" id="back2"></div>
<div class="backgroundimg" id="back3"></div>
<div class="backgroundimg" id="back4"></div>
<div class="backgroundimg" id="back5"></div>
</div>
</div>
It takes 2 seconds for each image to crossfade to the next, I tried changing it to 3 seconds by adding one second on each nth-of-type but didn't work. I need your help with this please!

Answer 1

You need to increase your delays in increments of 3 starting with the last child at 0 and the first child at the last increment - below we go from o to 12
You then need to change the animation length to be as long as the longest delay
.backgroundimg {
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
position: absolute;
top: 0;
left: 0;
height: 100%;
width: 100%;
}
#back5 {
background: url("http://duananhalotus.com/upload/album/0904234.jpg") no-repeat center fixed;
z-index: -1;
}
#back4 {
background: url("http://www.chinadaily.com.cn/world/images/attachement/jpg/site1/20120806/d4bed9d534551189e67329.jpg") no-repeat center fixed;
z-index: -1;
}
#back3 {
background: url("https://amazingslider.com/wp-content/uploads/2012/12/dandelion.jpg") no-repeat center fixed;
z-index: -1;
}
#back2 {
background: url("https://cdn.pixabay.com/photo/2013/04/06/11/50/image-editing-101040_960_720.jpg") no-repeat center fixed;
z-index: -1;
}
#back1 {
background: url("http://www.gettyimages.com/gi-resources/images/Embed/new/embed2.jpg") no-repeat center fixed;
z-index: -1;
}
#keyframes backgroundchangeFadeInOut {
0% {
opacity:1;
}
17% {
opacity:1;
}
25% {
opacity:0;
}
92% {
opacity:0;
}
100% {
opacity:1;
}
}
#-webkit-keyframes backgroundchangeFadeInOut {
0% {
opacity:1;
}
17% {
opacity:1;
}
25% {
opacity:0;
}
92% {
opacity:0;
}
100% {
opacity:1;
}
}
#backgroundchange div:nth-of-type(1) {
animation-delay: 12s;
-webkit-animation-delay: 12s;
}
#backgroundchange div:nth-of-type(2) {
animation-delay: 9s;
-webkit-animation-delay: 9s;
}
#backgroundchange div:nth-of-type(3) {
animation-delay: 6s;
-webkit-animation-delay: 6s;
}
#backgroundchange div:nth-of-type(4) {
animation-delay: 3s;
-webkit-animation-delay: 3s;
}
#backgroundchange div:nth-of-type(5) {
animation-delay: 0;
-webkit-animation-delay: 0;
}
#backgroundchange div {
animation-name: backgroundchangeFadeInOut;
animation-timing-function: ease-in-out;
animation-iteration-count: infinite;
animation-duration: 12s;
-webkit-animation-name: backgroundchangeFadeInOut;
-webkit-animation-timing-function: ease-in-out;
-webkit-animation-iteration-count: infinite;
-webkit-animation-duration: 12s;
}
<div class="inner">
<div id="backgroundchange">
<div class="backgroundimg" id="back1"></div>
<div class="backgroundimg" id="back2"></div>
<div class="backgroundimg" id="back3"></div>
<div class="backgroundimg" id="back4"></div>
<div class="backgroundimg" id="back5"></div>
</div>
</div>

Answer 2

You need to edit the animation-duration also to 12
.backgroundimg {
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
position: absolute;
top: 0;
left: 0;
height: 100%;
width: 100%;
}
#back5 {
background: url("http://duananhalotus.com/upload/album/0904234.jpg") no-repeat center fixed;
z-index: -1;
}
#back4 {
background: url("http://www.chinadaily.com.cn/world/images/attachement/jpg/site1/20120806/d4bed9d534551189e67329.jpg") no-repeat center fixed;
z-index: -1;
}
#back3 {
background: url("https://amazingslider.com/wp-content/uploads/2012/12/dandelion.jpg") no-repeat center fixed;
z-index: -1;
}
#back2 {
background: url("https://cdn.pixabay.com/photo/2013/04/06/11/50/image-editing-101040_960_720.jpg") no-repeat center fixed;
z-index: -1;
}
#back1 {
background: url("http://www.gettyimages.com/gi-resources/images/Embed/new/embed2.jpg") no-repeat center fixed;
z-index: -1;
}
#keyframes backgroundchangeFadeInOut {
0% {
opacity:1;
}
17% {
opacity:1;
}
25% {
opacity:0;
}
92% {
opacity:0;
}
100% {
opacity:1;
}
}
#-webkit-keyframes backgroundchangeFadeInOut {
0% {
opacity:1;
}
17% {
opacity:1;
}
25% {
opacity:0;
}
92% {
opacity:0;
}
100% {
opacity:1;
}
}
#backgroundchange div:nth-of-type(1) {
animation-delay: 12s;
-webkit-animation-delay: 12s;
}
#backgroundchange div:nth-of-type(2) {
animation-delay: 9s;
-webkit-animation-delay: 9s;
}
#backgroundchange div:nth-of-type(3) {
animation-delay: 6s;
-webkit-animation-delay: 6s;
}
#backgroundchange div:nth-of-type(4) {
animation-delay: 3s;
-webkit-animation-delay: 3s;
}
#backgroundchange div:nth-of-type(5) {
animation-delay: 0;
-webkit-animation-delay: 0;
}
#backgroundchange div {
animation-name: backgroundchangeFadeInOut;
animation-timing-function: ease-in-out;
animation-iteration-count: infinite;
animation-duration: 12s;
-webkit-animation-name: backgroundchangeFadeInOut;
-webkit-animation-timing-function: ease-in-out;
-webkit-animation-iteration-count: infinite;
-webkit-animation-duration: 12s;
}
<div class="inner">
<div id="backgroundchange">
<div class="backgroundimg" id="back1"></div>
<div class="backgroundimg" id="back2"></div>
<div class="backgroundimg" id="back3"></div>
<div class="backgroundimg" id="back4"></div>
<div class="backgroundimg" id="back5"></div>
</div>
</div>

Answer 3

this is working with 3 seconds delay, consider changing also the webkit property..
.backgroundimg {
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
position: absolute;
top: 0;
left: 0;
height: 100%;
width: 100%;
}
#back5 {
background: url("http://duananhalotus.com/upload/album/0904234.jpg") no-repeat center fixed;
z-index: -1;
}
#back4 {
background: url("http://www.chinadaily.com.cn/world/images/attachement/jpg/site1/20120806/d4bed9d534551189e67329.jpg") no-repeat center fixed;
z-index: -1;
}
#back3 {
background: url("https://amazingslider.com/wp-content/uploads/2012/12/dandelion.jpg") no-repeat center fixed;
z-index: -1;
}
#back2 {
background: url("https://cdn.pixabay.com/photo/2013/04/06/11/50/image-editing-101040_960_720.jpg") no-repeat center fixed;
z-index: -1;
}
#back1 {
background: url("http://www.gettyimages.com/gi-resources/images/Embed/new/embed2.jpg") no-repeat center fixed;
z-index: -1;
}
#keyframes backgroundchangeFadeInOut {
0% {
opacity:1;
}
17% {
opacity:1;
}
25% {
opacity:0;
}
92% {
opacity:0;
}
100% {
opacity:1;
}
}
#-webkit-keyframes backgroundchangeFadeInOut {
0% {
opacity:1;
}
17% {
opacity:1;
}
25% {
opacity:0;
}
92% {
opacity:0;
}
100% {
opacity:1;
}
}
#backgroundchange div:nth-of-type(1) {
animation-delay: 12s;
-webkit-animation-delay: 12s;
}
#backgroundchange div:nth-of-type(2) {
animation-delay: 9s;
-webkit-animation-delay:9s;
}
#backgroundchange div:nth-of-type(3) {
animation-delay: 6s;
-webkit-animation-delay: 6s;
}
#backgroundchange div:nth-of-type(4) {
animation-delay:3s;
-webkit-animation-delay: 3s;
}
#backgroundchange div:nth-of-type(5) {
animation-delay: 0;
-webkit-animation-delay: 0;
}
#backgroundchange div {
animation-name: backgroundchangeFadeInOut;
animation-timing-function: ease-in-out;
animation-iteration-count: infinite;
animation-duration: 12s;
-webkit-animation-name: backgroundchangeFadeInOut;
-webkit-animation-timing-function: ease-in-out;
-webkit-animation-iteration-count: infinite;
-webkit-animation-duration: 12s;
}
<div class="inner">
<div id="backgroundchange">
<div class="backgroundimg" id="back1"></div>
<div class="backgroundimg" id="back2"></div>
<div class="backgroundimg" id="back3"></div>
<div class="backgroundimg" id="back4"></div>
<div class="backgroundimg" id="back5"></div>
</div>
</div>