CSS Div border shows up even if hidden

Question

I'm currently trying to reproduce a candle effect on a webpage. Here's the result : https://jsfiddle.net/Zenoo0/z9nejmn3/

HTML

<div id="light"></div>

CSS

#light {
    top: 50%;
    left: 50%;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: none;
    position: absolute;
    background-color: rgba(255, 165, 0, 0.5);
    -webkit-box-shadow: 0 0 52px 52px rgba(255, 165, 0, 0.5);
    -moz-box-shadow: 0 0 52px 52px rgba(255, 165, 0, 0.5);
    box-shadow: 0 0 52px 52px rgba(255, 165, 0, 0.5);
    animation-name: lightFlicker;
    animation-duration:3ms;
    animation-delay:200ms;
    animation-timing-function: ease-in;
    animation-iteration-count: infinite;
    animation-direction: alternate;
    z-index: 10;
}

As you can see, my background light still has a little border, even though I previously set it to none. I can't seem to figure out how to remove it.

Thanks.

Answer 1

added to #light css filter: blur(4px);