What is the best way to eliminate the default spacing that surrounds my header strip?

Looking for a solution to this simple code issue - the strip I had created seems to have some margin or spacing around it, but I want it to occupy the entire top side of the page.

.header {
  background: #555;
  color: #f1f1f1;
  height: 100px;
  /* width: 100%; */
  margin: 0;
  padding: 0;
  border: none;
}
<div class="header" id="myHeader"></div>

Answer №1

These margins are directly related to the body element.

To eliminate any default margins on the body in CSS, you can simply set them to 0.

body {
  margin: 0;
}

It is important to ensure that your <html></html> tags encompass your entire HTML structure, while your <body></body> tags should contain all visible content elements.

Answer №2

If you want to cover the entire top area of the page, ensure the body's margin is set to 0px.

.header {
  background: #555;
  color: #f1f1f1;
  height: 100px;
  /* width: 100%; */
  margin: 0;
  padding: 0;
  border: none;
}

body {
  margin: 0px;
}
<div class="header" id="myHeader"></div>

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