Styling a DIV with a Background Image using CSS

Question

Styling a DIV with a Background Image using CSS

I've hit a roadblock trying to prevent a background image from extending beyond its DIV. I've had to resort to some less than ideal methods.

.animation span {
    position: absolute;
    top: 0;
    width: 100%;
    height: 100%;
    z-index: -999;
    animation-name: fade;
    animation-iteration-count: infinite;
    animation-duration: 40s;
    background-size: cover cover;
    background-repeat: no-repeat;
    background-position: center center;
}

...

<body>
  <div id='banner'>
    <div class="animation">
      <span id="f4"></span>
      <span id="f3"></span>
      <span id="f2"></span>
      <span id="f1"></span>
    </div>
    <div id="title">
      <h1>Silly Webpage Banner</h1>
    </div>
  </div>
  <div id="content" style="background-color:white;">
    Content
  </div>
</body>

Here is a fiddle

I ended up applying width, height, and top properties to the animation class just to display the image properly. Without a z-index, the content DIV ends up behind. Ideally, I would like it to adhere to background-size and background-position, but I can't seem to make it work.

html css

Answer 1

Answer №1

Is your design concept leaning more towards this approach? Where the background animation elements are all encapsulated within a defined banner container with specific width and height?

html,
body {
  width: 100%;
  height: 100%;
  padding: 0;
  margin: 0;
}
#banner {
  position: relative;
  display: block;
  height: 4rem;
  width: 100%;
  overflow: hidden;
}
#banner h1 {
  position: absolute;
  /* Position banner title */
  top:1rem;
  left:1rem;
  padding:0;
  margin:0;
}
#main {
  position: relative;
}
.animation div {
  position: absolute;
  width: 100%;
  height: 100%;
  animation-name: fade;
  animation-iteration-count: infinite;
  animation-duration: 40s;
  background-size: cover cover;
  background-repeat: no-repeat;
  background-position: center center;
}
#f1 {
  animation-delay: -0s;
  background-image: url('https://newevolutiondesigns.com/images/freebies/white-wallpaper-14.jpg');
}
#f2 {
  animation-delay: -10s;
  background-image: url('http://hdwallpaperbackgrounds.net/wp-content/uploads/2015/08/White-Background-Wallpapers-3D-Ball.jpg');
}
#f3 {
  animation-delay: -20s;
  background-image: url('http://dlc.middcreate.net/wp-content/uploads/2013/09/quality-photo-for-desktop-white-bubbles-widescreen-picture-and-image-background-wallpaper-with-high-resolution.jpg');
}
#f4 {
  animation-delay: -30s;
  background-image: url('http://hdpic.org/wp-content/uploads/2015/02/Pattern-Black-and-White-Amazing-Background-Cool-Background.jpg');
}
@keyframes fade {
  0% {
    opacity: 1;
  }
  17% {
    opacity: 1;
  }
  25% {
    opacity: 0;
  }
  92% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}

<!DOCTYPE HTML>

<body>
  <div id='banner'>
    <div class="animation">
      <div id="f4"></div>
      <div id="f3"></div>
      <div id="f2"></div>
      <div id="f1"></div>
    </div>
    <h1>Silly Webpage Banner</h1>
  </div>
  <div id="main">
    <div id="title">
    </div>
    <div id="content" style="background-color:white;">
      Content
    </div>
  </div>

</body>

Answer 2

Is your design concept leaning more towards this approach? Where the background animation elements are all encapsulated within a defined banner container with specific width and height?

html,
body {
  width: 100%;
  height: 100%;
  padding: 0;
  margin: 0;
}
#banner {
  position: relative;
  display: block;
  height: 4rem;
  width: 100%;
  overflow: hidden;
}
#banner h1 {
  position: absolute;
  /* Position banner title */
  top:1rem;
  left:1rem;
  padding:0;
  margin:0;
}
#main {
  position: relative;
}
.animation div {
  position: absolute;
  width: 100%;
  height: 100%;
  animation-name: fade;
  animation-iteration-count: infinite;
  animation-duration: 40s;
  background-size: cover cover;
  background-repeat: no-repeat;
  background-position: center center;
}
#f1 {
  animation-delay: -0s;
  background-image: url('https://newevolutiondesigns.com/images/freebies/white-wallpaper-14.jpg');
}
#f2 {
  animation-delay: -10s;
  background-image: url('http://hdwallpaperbackgrounds.net/wp-content/uploads/2015/08/White-Background-Wallpapers-3D-Ball.jpg');
}
#f3 {
  animation-delay: -20s;
  background-image: url('http://dlc.middcreate.net/wp-content/uploads/2013/09/quality-photo-for-desktop-white-bubbles-widescreen-picture-and-image-background-wallpaper-with-high-resolution.jpg');
}
#f4 {
  animation-delay: -30s;
  background-image: url('http://hdpic.org/wp-content/uploads/2015/02/Pattern-Black-and-White-Amazing-Background-Cool-Background.jpg');
}
@keyframes fade {
  0% {
    opacity: 1;
  }
  17% {
    opacity: 1;
  }
  25% {
    opacity: 0;
  }
  92% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}

<!DOCTYPE HTML>

<body>
  <div id='banner'>
    <div class="animation">
      <div id="f4"></div>
      <div id="f3"></div>
      <div id="f2"></div>
      <div id="f1"></div>
    </div>
    <h1>Silly Webpage Banner</h1>
  </div>
  <div id="main">
    <div id="title">
    </div>
    <div id="content" style="background-color:white;">
      Content
    </div>
  </div>

</body>

Answer 3

Answer №2

According to the positioning explanation on MDN's CSS position guide:

When an element is positioned relatively, it remains part of the normal document flow. On the other hand, absolute positioning removes the element from the flow, causing it not to take up space in relation to other elements. The absolutely positioned element is placed relative to its closest positioned ancestor (non-static). If no such ancestor exists, the initial container is used as reference.

This means that a background div set to absolute positioning is placed above other elements, thereby concealing them - hence the necessity for utilizing the z-index property.

Furthermore, since an absolutely positioned element does not interact with its parent element, you must explicitly define its size and location.

Answer 4

According to the positioning explanation on MDN's CSS position guide:

When an element is positioned relatively, it remains part of the normal document flow. On the other hand, absolute positioning removes the element from the flow, causing it not to take up space in relation to other elements. The absolutely positioned element is placed relative to its closest positioned ancestor (non-static). If no such ancestor exists, the initial container is used as reference.

This means that a background div set to absolute positioning is placed above other elements, thereby concealing them - hence the necessity for utilizing the z-index property.

Furthermore, since an absolutely positioned element does not interact with its parent element, you must explicitly define its size and location.

Answer 5

Answer №3

Curious about your intentions with this - can you provide more context?

.motion-effect {
     height: custom_height_value;
     position: absolute;
     width: custom_width_value;
}

Offering a suggestion that could potentially clarify things.

Answer 6

Curious about your intentions with this - can you provide more context?

.motion-effect {
     height: custom_height_value;
     position: absolute;
     width: custom_width_value;
}

Offering a suggestion that could potentially clarify things.

Styling a DIV with a Background Image using CSS

Answer №1

Answer №2

Answer №3

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