html5 - Why is a there about 1-2px gap between my caption and image? -


i can't seem find margin i'm confused cause , how remove it. can't see image can see grey border gap between caption , image still https://jsfiddle.net/nyftp2b7/11/

.caption-clr {    background-color: rgba(0, 0, 0, .1);  }  body {    background-color: lightgreen;  }
<figure class="main-image">    <a href="img/cannabislegalmap.png">      <img src="img/cannabislegalmap.png" width="100%" alt="image of map of states recreational cannabis legal">    </a>    <figcaption class="caption-clr">states recreational cannabis use legal.    </figcaption>  </figure>

if put float: left;

on image, solves problem so;

.main-image img { float: left; }

thanks


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