If-Else Statements in CSS: A Complete Guide

When it comes to styling web pages with CSS, if-else statements can be extremely useful for creating dynamic and responsive designs. In essence, if-else statements in CSS allow you to apply different styles to elements based on certain conditions.

The basic syntax for an if-else statement in CSS is as follows:

selector {
  property: value;
  /* if condition is true */
}
selector {
  property: value;
  /* if condition is false */
}

Here, the first selector and its associated properties will be applied if the condition is true, while the second selector and its properties will be applied if the condition is false.

One common use case for if-else statements in CSS is for media queries. For example, you might want to apply different styles to an element depending on the size of the screen. In this case, you could use the following if-else statement:

@media (max-width: 600px) {
  selector {
    property: value;
    /* styles for smaller screens */
  }
}
@media (min-width: 601px) {
  selector {
    property: value;
    /* styles for larger screens */
  }
}

Here, the first media query will apply the specified styles if the screen width is 600 pixels or less, while the second media query will apply the styles if the screen width is 601 pixels or more.

Overall, if-else statements can be a powerful tool for styling web pages with CSS. By using conditional logic, you can create designs that are dynamic, responsive, and tailored to the needs of your users.