When the page is scrolled, the fixed header continues to vanish

Hello everyone! I am struggling to keep an element fixed in place while scrolling. Despite setting the CSS to 'fixed', the header still disappears when I scroll.

Here is the HTML page:

<title>Final Test</title>

<meta name="viewport" content="width=device-width, initial-scale=1.0"/>

<script>
  window.open = function(){};
  window.print = function(){};

  if (false) {
    window.ontouchstart = function(){};
  }
</script>


<body>

**<div class="fixed">
  <h1>Packit<br></h1>

CSS PAGE

/* Reset */
* {
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
}
html, body, div, object, iframe, fieldset {
  margin: 0;
  padding: 0;
  border: 0;
}

input, select {
  width: 120px;
}

ol, ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

header, footer, nav, section, article, hgroup, figure {
  display: block;
}

legend {
  display: none;
}
...
...

/************End Classes**************/

/************Structure**************/
.container {
  max-width: 70em;
  margin: 0 auto;
  padding: 0 1em;
  overflow: hidden;
}

Answer №1

The issue with your situation lies in the organization of your HTML code. To resolve this, consider restructuring it as follows:

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link href="../Documents/Unnamed Site 2/stylesheet2.css" rel="stylesheet" type="text/css">

<script>
window.open    = function(){};
window.print   = function(){};
// Support hover state for mobile.
if (false) {
  window.ontouchstart = function(){};
}
</script>
<style>
   .col-group {
       overflow: hidden;
   }
   .col-group > div {
       padding: 1em;
   }
    // ... AND SO ON... // 

</style>
<title>JS Bin</title>
</head>

<body>
   <div class="fixed">   
       <h1>Packit</h1><br> // MAKE SURE TO CLOSE THE H1 TAG HERE
   </div>
</body>
</html>

Have you considered moving your CSS styles to an external file instead of using an embedded style sheet?

Answer №2

The issue you're encountering is due to the incorrect formatting of your HTML code. Placing the CSS stylesheet "Stylesheet2.css" within the body section is causing it not to function properly as external style sheets should be linked in the head. It's also recommended to include in the head section of the page for consistency.

Answer №3

Encountering a similar issue with Chrome, I discovered that it may be a bug triggered by excessive activity within the webpage. To resolve this, I incorporated specific transform code into the fixed position element (

transform: translateZ(0);-webkit-transform: translateZ(0);
). This prompts the browser to utilize hardware acceleration and access the device's GPU for enhanced rendering performance. While web applications traditionally rely on the browser for rendering, advancements in technology have enabled browsers to offer graphical hardware acceleration through distinct CSS rules.

By incorporating -webkit-transform: translate3d(0,0,0);, the GPU is activated during CSS transitions, resulting in smoother animations with higher FPS.

Note: Although translate3d(0,0,0) does not visibly affect the object's position, it serves as a technique to enforce hardware acceleration.

.fixed {
    position: fixed;
    background: white;
    border-bottom: 2px solid #eaeaea;
    width: 100%;
    left: 0;
    top: 0;
    z-index: 9994;
    height: 80px;
    /* MAGIC HAPPENS HERE */
    transform: translateZ(0);
    -webkit-transform: translateZ(0);
}

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