Design a sophisticated background using CSS

Question

Design a sophisticated background using CSS

https://i.sstatic.net/yILwL.png

I am wondering if there is a way to create a CSS3 background similar to the one shown in the image link above. The gradient should smoothly transition from white to black, spanning across a header div, and remain consistent regardless of screen width (always white on the left side and black on the right side).

The reason for not using an image is due to longer loading times and difficulty resizing the width when the browser is smaller than 1920px (the width of the image).

I have attempted to use linear-gradient but have had no success...Any suggestions or guidance would be greatly appreciated.

Regards, Jens

html css

Answer 1

Answer №1

To achieve the black bar at the top, it is important to specify dimensions for the background, eliminate repetition, and position it according to your preferences (similar to a regular background image).

div { 
  background-color: black; 
  background-image: linear-gradient(to right, white, black); 
  background-repeat:no-repeat;
  background-size:100% 20px; /*full width, 20px height*/
  background-position:0 100%; /*gradient at bottom*/
  
  /*just to give size to demo*/
  min-height:50px;
}

<div></div>

Answer 2

To achieve the black bar at the top, it is important to specify dimensions for the background, eliminate repetition, and position it according to your preferences (similar to a regular background image).

div { 
  background-color: black; 
  background-image: linear-gradient(to right, white, black); 
  background-repeat:no-repeat;
  background-size:100% 20px; /*full width, 20px height*/
  background-position:0 100%; /*gradient at bottom*/
  
  /*just to give size to demo*/
  min-height:50px;
}

<div></div>

Answer 3

Answer №2

If you're looking to add some CSS styling, check out this code snippet:

#rainbow {
  background: red; /* Fallback for older browsers */
  background: -webkit-linear-gradient(left, orange, yellow, green, blue, indigo, violet); /* For Safari/Chrome */
  background: -o-linear-gradient(right, orange, yellow, green, blue, indigo, violet); /* For Opera */
  background: -moz-linear-gradient(right, orange, yellow, green, blue, indigo, violet); /* For Firefox */
  background: linear-gradient(to right, orange, yellow, green, blue, indigo, violet); /* Standard syntax */
}

Source: http://www.example.com/css-rainbow-gradients

Answer 4

If you're looking to add some CSS styling, check out this code snippet:

#rainbow {
  background: red; /* Fallback for older browsers */
  background: -webkit-linear-gradient(left, orange, yellow, green, blue, indigo, violet); /* For Safari/Chrome */
  background: -o-linear-gradient(right, orange, yellow, green, blue, indigo, violet); /* For Opera */
  background: -moz-linear-gradient(right, orange, yellow, green, blue, indigo, violet); /* For Firefox */
  background: linear-gradient(to right, orange, yellow, green, blue, indigo, violet); /* Standard syntax */
}

Source: http://www.example.com/css-rainbow-gradients

Answer 5

Answer №3

Although the OP's question has been answered, I want to add some more information to provide a deeper understanding of creating a complex background.

Firstly, you can stack multiple backgrounds on top of each other: https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Backgrounds_and_Borders/Using_multiple_backgrounds
Secondly, you can specify the position, size, etc., of a background-image. Here is a concise syntax for it: https://www.w3schools.com/cssref/css3_pr_background.asp.

Why use background-image? The basic theory in CSS states that an element's background can have only 1 background-color, with multiple background-images layered on top (even if the background-color is declared after the background-image, background-color will still be placed below the background-images). You can resize and reposition these background-images. It's important to note that a linear-gradient counts as a background-image, not as a background-color. For detailed information, refer to the links provided above.

For a quick demo showcasing a "more complex" background based on the OP's question using only one HTML div:

div {
  background:
    linear-gradient(to right, white, black) 0 100%/100% 20px no-repeat,
    linear-gradient(to left, white, black) 0 0/100% 20px no-repeat,
    black;
  height: 100px;
}

<div></div>

I felt inspired to write this lengthy comment because of a tutorial I came across . In the tutorial, there are verbose hacks in HTML and CSS to achieve what I am able to do with just a single line of CSS background, which I find really cool to share, don't you think?

/* simpler */

.box {
  width: 100%;
  height: 100px;
  background: linear-gradient(to right,black 0%,black 30%,transparent 75%,transparent 100%), green;
}

/* more complex */

.content {
  height: 100px;
  position: relative;
}

.background {
  display: flex;
  height: 100%;
}

.left {
  background: black;
  width: 30%;
  position: relative;
}

.left:before {
  content: '';
  position: absolute;
  background-image: linear-gradient(to right,#000,transparent);
  top: 0;
  bottom: 0;
  left: 100%;
  width: 275px;
}

.right {
  background: green;
  width: 70%;
}

.content-container {
  color: white;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 30px
}

<!-- simpler -->

<div class="box">
  <div class="content-container">content here...</div>
</div>

<hr>

<!-- more complex -->
<div class="content">
  <div class="background">
    <div class="left">left</div>
    <div class="right">right</div>
  </div>
  <div class="content-container">content here...</div>
</div>

Answer 6

Although the OP's question has been answered, I want to add some more information to provide a deeper understanding of creating a complex background.

Firstly, you can stack multiple backgrounds on top of each other: https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Backgrounds_and_Borders/Using_multiple_backgrounds
Secondly, you can specify the position, size, etc., of a background-image. Here is a concise syntax for it: https://www.w3schools.com/cssref/css3_pr_background.asp.

Why use background-image? The basic theory in CSS states that an element's background can have only 1 background-color, with multiple background-images layered on top (even if the background-color is declared after the background-image, background-color will still be placed below the background-images). You can resize and reposition these background-images. It's important to note that a linear-gradient counts as a background-image, not as a background-color. For detailed information, refer to the links provided above.

For a quick demo showcasing a "more complex" background based on the OP's question using only one HTML div:

div {
  background:
    linear-gradient(to right, white, black) 0 100%/100% 20px no-repeat,
    linear-gradient(to left, white, black) 0 0/100% 20px no-repeat,
    black;
  height: 100px;
}

<div></div>

I felt inspired to write this lengthy comment because of a tutorial I came across . In the tutorial, there are verbose hacks in HTML and CSS to achieve what I am able to do with just a single line of CSS background, which I find really cool to share, don't you think?

/* simpler */

.box {
  width: 100%;
  height: 100px;
  background: linear-gradient(to right,black 0%,black 30%,transparent 75%,transparent 100%), green;
}

/* more complex */

.content {
  height: 100px;
  position: relative;
}

.background {
  display: flex;
  height: 100%;
}

.left {
  background: black;
  width: 30%;
  position: relative;
}

.left:before {
  content: '';
  position: absolute;
  background-image: linear-gradient(to right,#000,transparent);
  top: 0;
  bottom: 0;
  left: 100%;
  width: 275px;
}

.right {
  background: green;
  width: 70%;
}

.content-container {
  color: white;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 30px
}

<!-- simpler -->

<div class="box">
  <div class="content-container">content here...</div>
</div>

<hr>

<!-- more complex -->
<div class="content">
  <div class="background">
    <div class="left">left</div>
    <div class="right">right</div>
  </div>
  <div class="content-container">content here...</div>
</div>

Design a sophisticated background using CSS

Answer №1

Answer №2

Answer №3

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