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reaction-test.html
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reaction-test.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Reaction Test</title>
<style>
#screen {
width: 300px;
height: 200px;
text-align: center;
user-select: none;
}
#screen.waiting {
background-color: aqua;
}
#screen.ready {
background-color: red;
color: white;
}
#screen.now {
background-color: greenyellow;
}
#title {
font-size: 25px;
padding-top: 80px;
}
.subText {
padding: 10px 5px;
}
</style>
</head>
<body>
<div style="color: orange; padding: 10px;">
Go to the main page <a href="index.html">Click!!</a>
</div>
<div id="screen" class="waiting">
<div id="title">Click to start</div>
<div id="subtitle" class="subText">
When the red box turns green, click as quickly as you can.
</div>
<div id="result" class="subText"></div>
</div>
<script src="reaction-test.js"></script>
</body>
</html>