The `transition-delay` property determines the time interval before a transition animation starts. It can be utilized in creating transition sequences for various elements. 
```css
transition-delay: 0.5s | 500ms;
```
By default, the delay time is set to `0` seconds. 

Let's consider the following example. When we hover over the square, the transition animation will begin in `1` second, as the `transition-delay` is set to `1000` milliseconds.

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What does the `transition-delay` property control?

Level up your styling skills by mastering advanced CSS techniques for modern web design. Position and manage elements with precision using advanced positioning strategies. Create smooth transitions and engaging animations to enhance user experience. Transform and manipulate elements for dynamic visual effects. Build responsive designs that adapt across devices and learn to streamline your workflow with CSS preprocessors like Sass.

Research what learners can expect from this advanced HTML and CSS styling course. What do you need to know before starting the course? What topics will be covered in it?

Position and manage elements on the web pages. Learn about the different positioning properties, discover how to use the stacking order to control the visibility of elements that overlap each other, and finally, handle content overflow. 

Research the power of transitions and learn how to improve the user experience. Discover how to liven properties smoothly and gradually, creating seamless state transitions.

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Adding Delay to CSS Transitions

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Adding Delay to CSS Transitions