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canvas abnormal border style #362

@canvascat

Description

@canvascat

Describe it simply:

If tailwindcss is used, there will be a global border style

Image
* {
  border: 0 solid;
}

When we capture the canvas, the converted image will have the following style

Image

but not border-witdh: 0;

Image

Quick demo to reproduce

demo:
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>snapdom demo</title>
    <style>
      * {
        border: 0 solid;
      }
    </style>
  </head>

  <body>
    <code id="ua"></code>
    <br />
    <button id="snapdom">snapdom</button>
    <button id="download">download svg</button>
    <div style="outline: 1px solid red">
      <main>
        <br/>
        <canvas id="canvas" width="300" height="100"></canvas>
        <br/>
      </main>
    </div>
    <h2>snapdom result</h2>
    <div id="snapdom-result" style="outline: 1px solid green"></div>
    <h2>iframe preview</h2>
    <div id="iframe-preview" style="outline: 1px solid green"></div>
  </body>
  <script type="module">
    document.getElementById("ua").textContent = navigator.userAgent;
    import { snapdom } from "https://cdn.jsdelivr.net/npm/@zumer/snapdom/dist/snapdom.mjs";

    document.getElementById("snapdom").addEventListener("click", async () => {
      const $main = document.querySelector("main");
      const result = await snapdom($main);
      const $img = await result.toPng();
      document.getElementById("snapdom-result").innerHTML = "";
      document.getElementById("snapdom-result").appendChild($img);

      const $iframe = document.createElement("iframe");
      $iframe.src = result.url;
      $iframe.style.width = "100%";
      $iframe.style.height = $main.offsetHeight + 200 + "px";
      document.getElementById("iframe-preview").innerHTML = "";
      document.getElementById("iframe-preview").appendChild($iframe);
    });

    document.getElementById("download").addEventListener("click", async () => {
      const $main = document.querySelector("main");
      const result = await snapdom($main);
      await result.download({ format: "svg", filename: "screenshot" });
    });

    window.addEventListener('DOMContentLoaded', async () => {
      const canvas = document.getElementById("canvas");
      const ctx = canvas.getContext("2d");
      ctx.fillStyle = "yellow";
      ctx.fillRect(0, 0, canvas.width, canvas.height);
      document.getElementById("snapdom").click()
    });
  </script>
</html>

Anything else we should know?

Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/143.0.0.0 Safari/537.36

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