text label test

Testing several ways to make a test label readable. Last two solutions by https://stackoverflow.com/questions/58784904/how-to-create-a-blurred-label-background-with-svg-filters/58785393#58785393.

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<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v5.min.js"></script>
  <style>
    body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
    .black {
      fill: black;
    }
    .blue {
      fill: blue;
    }
    .red {
      fill: red;
    }    
    .yellow {
      fill: yellow;
    }
    .label{
      fill: black;
      font-size: 14px;
    }
    .label-background{
      fill: white;
      font-size: 16px;
    }
    .text-background{
      paint-order: stroke;
      stroke: #fff;
      fill: black;
      stroke-width: 5px;
    }
    .header{
      font-size: 20px;
    }
    .background{
      fill: white;
      opacity: 0.6;
    }
    
    svg g.row-7 text {
      text-shadow: 0px 0px 2px white,
                   0px 0px 4px white,
                   0px 0px 6px white,
                   0px 0px 8px white,
                   0px 0px 10px white;
    }
  </style>
</head>

<g class="row-1" transform="translate(0,30)">
      <text class="header" x="20" y="-10">text label on top of bar </text>
      <g>
        <rect class="black" width=100 height=30></rect>
        <text class="label" x="20" y="20">my text label</text>
      </g>

<g transform="translate(120,0)">
        <rect class="blue" width=100 height=30></rect>
        <text class="label" x="20" y="20">my text label</text>
      </g>

<g transform="translate(240,0)">
        <rect class="red" width=100 height=30></rect>
        <text class="label" x="20" y="20">my text label</text>
      </g>

<g transform="translate(360,0)">
        <rect class="yellow" width=100 height=30></rect>
        <text class="label" x="20" y="20">my text label</text>
      </g>
    </g>  
    
		<g class="row-2" transform="translate(0,100)">
      <text class="header" x="20" y="-10">text label on top of rect.background on top of bar </text>
      <g>
        <rect class="black" width=100 height=30></rect>
        <rect class="background" x=17 y=6 width=78 height=19></rect>
        <text class="label" x="20" y="20">my text label</text>
      </g>

<g transform="translate(120,0)">
        <rect class="blue" width=100 height=30></rect>
        <rect class="background" x=17 y=6 width=78 height=19></rect>
        <text class="label" x="20" y="20">my text label</text>
      </g>

<g transform="translate(240,0)">
        <rect class="red" width=100 height=30></rect>
        <rect class="background" x=17 y=6 width=78 height=19></rect>
        <text class="label" x="20" y="20">my text label</text>
      </g>

<g transform="translate(360,0)">
        <rect class="yellow" width=100 height=30></rect>
        <rect class="background" x=17 y=6 width=78 height=19></rect>
        <text class="label" x="20" y="20">my text label</text>
      </g>
  	</g>
    
    <g class="row-3" transform="translate(0, 170)">
      <text class="header" x="20" y="-10">text label with filter #solid on top of bar </text>
      <g>
        <rect class="black" width=100 height=30></rect>
        <text class="label" filter="url(#solid)" x="20" y="20">my text label</text>
      </g>

<g transform="translate(120,0)">
        <rect class="blue" width=100 height=30></rect>
        <text class="label" filter="url(#solid)" x="20" y="20">my text label</text>
      </g>

<g transform="translate(240,0)">
        <rect class="red" width=100 height=30></rect>
        <text class="label" filter="url(#solid)" x="20" y="20">my text label</text>
      </g>

<g transform="translate(360,0)">
        <rect class="yellow" width=100 height=30></rect>
        <text class="label" filter="url(#solid)" x="20" y="20">my text label</text>
      </g>
    </g>

<g class="row-4" transform="translate(0, 240)">
      <text class="header" x="20" y="-10">text label on top of larger text label with background color on top of bar </text>
      <g>
        <rect class="black" width=100 height=30></rect>
        <text class="label-background" x="18" y="22">my text label</text>
        <text class="label" x="20" y="20">my text label</text>
      </g>

<g transform="translate(120,0)">
        <rect class="blue" width=100 height=30></rect>
        <text class="label-background" x="18" y="22">my text label</text>
        <text class="label" x="20" y="20">my text label</text>
      </g>

<g transform="translate(240,0)">
        <rect class="red" width=100 height=30></rect>
        <text class="label-background" x="18" y="22">my text label</text>
        <text class="label" x="20" y="20">my text label</text>
      </g>

<g transform="translate(360,0)">
        <rect class="yellow" width=100 height=30></rect>
        <text class="label-background" x="18" y="22">my text label</text>
        <text class="label" x="20" y="20">my text label</text>
      </g>
    </g> 
    
    <g class="row-5" transform="translate(0, 310)">
      <text class="header" x="20" y="-10">text label with paint-order: stroke on top of bar </text>
      <g>
        <rect class="black" width=100 height=30></rect>
        <text class="label text-background" x="20" y="20">my text label</text>
      </g>

<g transform="translate(120,0)">
        <rect class="blue" width=100 height=30></rect>
        <text class="label text-background" x="20" y="20">my text label</text>
      </g>

<g transform="translate(240,0)">
        <rect class="red" width=100 height=30></rect>
        <text class="label text-background" x="20" y="20">my text label</text>
      </g>

<g transform="translate(360,0)">
        <rect class="yellow" width=100 height=30></rect>
        <text class="label text-background" x="20" y="20">my text label</text>
      </g>
    </g> 
    
    <g class="row-6" transform="translate(0,380)">
      <text class="header" x="0" y="-10">feGaussianBlur on SourceAlpha</text>
      <g>
        <rect class="black" width=100 height=30></rect>
        <text class="label" x="20" y="20" filter="url(#shadow)">my text label</text>
      </g>
      <g transform="translate(120,0)">
        <rect class="blue" width=100 height=30></rect>
        <text class="label" x="20" y="20" filter="url(#shadow)">my text label</text>
      </g>
      <g transform="translate(240,0)">
        <rect class="red" width=100 height=30></rect>
        <text class="label" x="20" y="20" filter="url(#shadow)">my text label</text>
      </g>
      <g transform="translate(360,0)">
        <rect class="yellow" width=100 height=30></rect>
        <text class="label" x="20" y="20" filter="url(#shadow)">my text label</text>
      </g>
  	</g> 
    
    <g class="row-7" transform="translate(0,450)">
      <text class="header" x="20" y="-10">text label on top of bar </text>
      <g>
        <rect class="black" width=100 height=30></rect>
        <text class="label" x="20" y="20">my text label</text>
      </g>

<g transform="translate(120,0)">
        <rect class="blue" width=100 height=30></rect>
        <text class="label" x="20" y="20">my text label</text>
      </g>

<g transform="translate(240,0)">
        <rect class="red" width=100 height=30></rect>
        <text class="label" x="20" y="20">my text label</text>
      </g>

<g transform="translate(360,0)">
        <rect class="yellow" width=100 height=30></rect>
        <text class="label" x="20" y="20">my text label</text>
      </g>
    </g> 
  </svg>
  
</body>

https://d3js.org/d3.v5.min.js