The settle Command


  setttle [<expression>]


The settle command allows you to synchronize on the CSS transition of an element. It will listen for the transitionend even on the given element (or me if no element is given).

If a transitionstart event is not received within 500ms, the command will continue assuming that no transition will occur.


    #pulsar {
        transition: all 800ms ease-in-out;
    .red {
        background: red;
<div id="pulsar"
     _="on load repeat 6 times 
                toggle .red then settle">
    You thought the blink tag was dead?