In AMP HTML pages adding visual effect is easy using the amp-fx-collection component which provides a range of collections of effects such as fade-in which a background image opacity keeps on increasing till is visible .
Required Scripts: Importing the amp-fx-collection into the header.
HTML
< script async custom-element = "amp-fx-collection" src =
</ script >
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Attributes:
- data-duration: Specifies the duration of the animation it becomes static after the elapsed time.
- data-easing: Varies the animation speed through out the entire duration.
- data-margin-start/end: Specifies at what % of margin of the view port should the animation start.
- data-repeat: To repeat animation even after fully loaded after scroll.
- fade-in-scroll: To change opacity of the image when it scrolls within the view port.
Example:
HTML
<!doctype html> < html amp>
< head >
< meta charset = "utf-8" >
< title >Google AMP fad-in Animation</ title >
< script async src =
</ script >
<!-- Import `amp-fx-collection` extension -->
< script async custom-element = "amp-fx-collection" </ script >
< link rel = "canonical" href =
< meta name = "viewport" content =
"width=device-width,minimum-scale=1,initial-scale=1" >
< style amp-boilerplate>
body {
-webkit-animation: -amp-start 8s
steps(1, end) 0s 1 normal both;
-moz-animation: -amp-start 8s
steps(1, end) 0s 1 normal both;
-ms-animation: -amp-start 8s
steps(1, end) 0s 1 normal both;
animation: -amp-start 8s
steps(1, end) 0s 1 normal both
}
@-webkit-keyframes -amp-start {
from {
visibility: hidden
}
to {
visibility: visible
}
}
@-moz-keyframes -amp-start {
from {
visibility: hidden
}
to {
visibility: visible
}
}
@-ms-keyframes -amp-start {
from {
visibility: hidden
}
to {
visibility: visible
}
}
@-o-keyframes -amp-start {
from {
visibility: hidden
}
to {
visibility: visible
}
}
@keyframes -amp-start {
from {
visibility: hidden
}
to {
visibility: visible
}
}
</ style >
< noscript >
< style amp-boilerplate>
body {
-webkit-animation: none;
-moz-animation: none;
-ms-animation: none;
animation: none
}
</ style >
</ noscript >
< style amp-custom>
.header {
position: relative;
overflow: hidden;
}
.header h1 {
color: white;
bottom: 10%;
left: 10px;
position: absolute;
z-index: 1;
font-size: 1.7em;
}
.title {
background-color: black;
color: white;
}
.parallax-image-window {
overflow: hidden;
}
.parallax-image-window amp-img {
margin-bottom: -20%;
}
</ style >
</ head >
< body >
<!--fade-in with a duration-->
< amp-img amp-fx = "fade-in" data-duration = "2000ms" width = "1280" height = "873" layout = "responsive" src =
</ amp-img >
<!-- animation starts past 50%
of the viewport-->
< amp-img amp-fx = "fade-in" data-margin-start = "50%" width = "1280" height = "873" layout = "responsive" src =
</ amp-img >
<!-- Scroll dependent fade-in -->
< amp-img amp-fx = "fade-in-scroll" width = "1600" height = "900" layout = "responsive" src =
</ amp-img >
<!-- Custom start/end points -->
< amp-img amp-fx = "fade-in-scroll" data-margin-start = "20%" data-margin-end = "80%" width = "1600" height = "900"
layout = "responsive" src =
</ amp-img >
</ body >
</ html >
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Output:
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