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My div will not stretch the full width of the browser, it stops short on both ends by about 10px.

.header {
  position: relative;
  background-color: #088ed7;
  width: auto;
  height: 20px;
}
<div class="header">...</div>
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1 Answer

It's likely the page's margin and/or padding.

Add:

html, body {
  padding: 0;
  margin: 0;
}

.header {
  margin: 0;
}

html,
body {
  padding: 0;
  margin: 0;
}

.header {
  margin: 0;
  position: relative;
  background-color: #088ed7;
  width: auto;
  height: 20px;
}
<div class="header">...</div>

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
thumb_up_alt 0 like thumb_down_alt 0 dislike
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