Why does my dark theme button only turn the border black?

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i am trying to make a button that makes the whole screen black, and then white if you hit it again. it works its just that when you hit the black one it only does the outlines of the website black ex= here is the link to the picture https://drive.google.com/file/d/1znZHMWs7H3UuzXO0fTmGXFAdYNm9ZJJ_/view?usp=sharing
and i just dont know how to make it so the whole backround is black.
my code is below. what do i do!!!

meta name="viewport" content="width=device-width, initial-scale=1">
<style>
body {
  padding: 25px;
  background-color:white;
  color: black;
  font-size: 25px;
}

.dark-mode {
  background-color: black;
  color: rgb(0, 0, 0);
}
</style>
</head>
<body>

<h2>Toggle Dark/Light Mode</h2>
<p>Click the button to toggle between dark and light mode for this page.</p>

<button onclick="myFunction()">Toggle dark mode</button>

<script>
function myFunction() {
   var element = document.body;
   element.classList.toggle("dark-mode");
}
</script>

</body>

What I have tried:

i hav tried to change colors and everything. i just dont know what to do

Posted 11-Jan-21 5:38am

cohanroderick

Updated 12-Jan-21 5:31am

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Richard Deeming · Answer 1 · 2021-01-12T05:31:00

Solution 1

Your .dark-mode class sets both the background and foreground colours to black.

Set the foreground colour to white, and your code will work as expected:

CSS

.dark-mode {
    background-color: black;
    color: white;
}

Demo[^]

Posted 12-Jan-21 5:31am

Richard Deeming