javascript - translateX to left of viewport -

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is there way translatex left side of viewport? need use css animation using translatex rather left.

here codepen approximates trying do, using velocity.js plugin. problem want animate translatex top left of viewport, not sure how calculate that..

here relevant javascript setting translatex:

.setvelocity(".animate-it", {translatex: '[this need help]' }, {duration: 150})

thanks suggestions!

myabe set inital position top left , store in class, , same second state (put in other class)...and then, via javascript, change classes want applied.


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