html - Horizontal and vertical center a fixed width/height element in svg -

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i have following html code:

<div class="youtube-preview"        style="background-color: #333; position: relative; width: 420px; height:316px">  <svg version="1.1" xmlns="http://www.w3.org/2000/svg"       width="80" height="55"       style="position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);">      <rect width="100%" height="100%" rx="20" ry="0" fill="#fff"/>  </svg>  </div>

this produces div has smaller box inside centered both vertically , horizontally, exact effect want.

however, want convert svg. i've spent last 2 days looking a way center element (without scaling) in fluid dimensioned svg , couldn't find anything.

is possible? seems pretty basic...

notes:

  • the "black box" can have width , height , ratio can change.
  • the inner box has fixed dimensions , should not scale (up or down)

no. can't done - without using javascript resize , reposition inner box.

if want svg responsive, have accept inside scale also.

this may possible svg 2, not svg 1.1 , current browsers.


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