Understanding the Font-Size Property in CSS

The correct answer to the question "Which property helps to control the text size?" is the "font-size" property. This is a fundamental attribute in CSS (Cascading Style Sheets) which is particularly used to define the size of the text in web design and development.

The "font-size" property is highly versatile and accepts various types of values. For instance, you may use fixed-size dimensions like px (pixels), or relative size indicators such as em or % which adjust the text size in relation to other elements on the page.

Here's a basic example of how "font-size" is used:

p {
  font-size: 16px;
}

In this simple CSS declaration, the "p" stands for "paragraph" – indicating that the rule applies to all text within <p> HTML tags. The text within these tags would appear at a size of 16 pixels.

Best practices recommend to use relative units like em or rem instead of absolute units like px. This gives your website better scalability and accessibility, as it allows users to adjust the text size to their own viewing preferences using the browser's zoom function.

In addition to "font-size", there are numerous other CSS properties related to typography that can enhance the design and usability of your website. These include "font-weight" to adjust the boldness of the text, "font-style" to apply styles like italic, and "line-height" for controlling the space between lines of text.

Now that you understand the "font-size" property, you'll be in a better position to customize your webpage designs and create a more cultured viewing experience for your users.