Achieve a full-width image by eliminating the left and right margins

Need help with a CSS issue,

I have a margin of 18px on both sides of a section on my page. However, I want to make an image (a child element) span 100% width without being affected by this margin.

Using negative margin or setting the width to 100vw doesn't give me the desired result - it either doesn't work or adds a scroll bar.

How can I make sure that the image stretches to fill the entire width of the page?

Check out an example here: https://codepen.io/astr0cd/pen/YzqXmEp

.section {
  margin: 60px 18px;
}

.image {
  width: 100%;
  height: 400px;
  margin-left: -18px;
  margin-right: -18px;
  object-fit: cover;
}
<div class="section">
  <img src="https://cdn.pixabay.com/photo/2015/04/23/22/00/tree-736885__340.jpg" alt="#" class="image">
</div>

htmlcssimagemargin

Answer №1

Update the CSS by removing the margin-right: -18px and adjusting the width to calc(100% + 36px). Additionally, ensure that the margin:0 is applied to the body element, not the html.

body {
  margin: 0;
  padding: 0;
}

.section {
  margin: 60px 18px;
}

.image {
  width: calc(100% + 36px);
  height: 400px;
  margin-left: -18px;
  object-fit: cover;
}
<section class="section">
  <img src="https://cdn.pixabay.com/photo/2015/04/23/22/00/tree-736885__340.jpg" alt="#" class="image">
</section>

Answer №2

To achieve this effect, you can follow the example below. Take note of how the .image class functions. Regardless of the margin set for the .section class, the .image will always be at 100% width.

.section{
    margin: 60px 18px;  
}
.image {
  width: 100vw;
  position: relative;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
}
<div class="section">
  <img src="https://cdn.pixabay.com/photo/2015/04/23/22/00/tree-736885__340.jpg" alt="#" class="image">
</div>

Answer №3

To achieve this effect, you may utilize absolute positioning in your CSS code. .photo { position: absolute; ...additional styles }

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