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Simple responsive design test page. More info here:
<!DOCTYPE html>
<meta charset="utf-8">
<title>Responsive Design Testing</title>
body { margin: 20px; font-family: sans-serif; overflow-x: scroll; }
.wrapper { width: 6000px; }
.frame { float: left; }
h2 { margin: 0 0 5px 0; }
iframe { margin: 0 20px 20px 0; border: 1px solid #666; }
<div class="wrapper">
<div class="frame">
<h2>320 &times; 480 <small>(mobile)</small></h2>
<iframe src="./" sandbox="allow-same-origin allow-forms" seamless width="320" height="480"></iframe>
<div class="frame">
<h2>480 &times; 640 <small>(small tablet)</small></h2>
<iframe src="./" sandbox="allow-same-origin allow-forms" seamless width="480" height="640"></iframe>
<div class="frame">
<h2>768 &times; 1024 <small>(tablet - portrait)</small></h2>
<iframe src="./" sandbox="allow-same-origin allow-forms" seamless width="768" height="1024"></iframe>
<div class="frame">
<h2>1024 &times; 768 <small>(tablet - landscape)</small></h2>
<iframe src="./" sandbox="allow-same-origin allow-forms" seamless width="1024" height="768"></iframe>
<div class="frame">
<h2>1200 &times; 800 <small>(desktop)</small></h2>
<iframe src="./" sandbox="allow-same-origin allow-forms" seamless width="1200" height="800"></iframe>

I have to add a html extension to the file to view it in Safari. And it opens Finder windows instead of showing de website in de iframes. Am i doing something wrong?


@herjen Ideally you should save this gist as an html file, then place it in the same directory as the file you want to test. Then, for each iframe, change the "src" attribute to the name of the file you want to test. Then, load this file in your browser.


Hi @lensco do you mind if I take this gist, modify it, make it a git repo and push it to my GitHub account? I would link to your original gist and blog post in the readme. I'd like to avoid any copyright issues so I thought I'd ask first.


@lensco it works. Mabye an idea to make the default source "index.html". Thanks.


I forked your gist to allow javascript in the iframes,
Just added "allow-scripts" to the sandbox attribute

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