Replaced lazyloading script 'unveil' with '
lazysizes. Browser support is at least IE9, or Firefox, or Chrome.
Provides a much smoother lazy-loading experience, and better client performance.
Unveil effects
Add styling to your theme for the classes: lazyload, lazyloading, lazyloaded.
Fade in
CSS:
.lazyload,
.lazyloading {
opacity: 0;
}
.lazyloaded {
opacity: 1;
transition: opacity 300ms;
}
Spinner
CSS:
.lazyload {
opacity: 0;
}
.lazyloading {
opacity: 1;
transition: opacity 300ms;
background: #f7f7f7 url(loader.gif) no-repeat center;
}