What are some effective strategies for preventing CSS duplication?

What is the best way to prevent repeating CSS code like this:

div#logo div:nth-child(1) div {
    width: 30%;
    height: 30%;
    background-color: white;
}

div#logo div:nth-child(3) div {
    width: 30%;
    height: 30%;
    background-color: white;
}

Answer №1

If you're looking to style elements in a sequence such as 1,3,5,7....you can use the CSS selector div:nth-child(2n+1). This will start with 2(0)+1=1, then add 2(1)+1=3, 2(2)+1=5, and so on.

div#logo div:nth-child(2n+1) div{
    width: 30%;
    height: 30%;
    background-color: white;
}

Answer №2

To create a cohesive design, you have the option of merging the declarations as shown below:

section#header div:nth-child(2) div, section#header div:nth-child(4) div{
  width: 40%;
  height: 60%;
  background-color: lightgray;
}

Answer №3

style for displaying a white background on every odd colored div within the logo section with dimensions of 30% width and height.

Answer №4

If you're looking to identify identical or comparable css classes within your project, consider utilizing the following tool from GitHub: css-checker.

This unique tool is capable of analyzing all of your css files to pinpoint those that have an 80% or greater similarity and highlight their differences.

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