1.  Block and Inline Elements:
By default, HTML elements are either block-level or inline-level. Block-level elements start on a new line and stretch the full width of their container, creating a distinct “block.” Examples include div, p, and heading elements. On the other hand, inline-level elements flow within the content and do not start on a new line. Common inline elements include span, strong, and a.

To explicitly set the display property, you can use CSS like this:

.block-element {
display: block;
}

.inline-element {
display: inline;
}

2. Flexbox Layout:
Flexbox, short for flexible box, is a modern layout model that simplifies the design of complex and responsive user interfaces. The display property is set to “flex” to enable flexbox on a container, allowing child elements to be easily aligned, justified, and reordered. Flexbox excels in creating one-dimensional layouts, such as navigation bars or evenly spaced items.

.flex-container {
display: flex;
justify-content: space-between;
}

3. Grid Layout:
Grid layout is another powerful CSS feature that enables two-dimensional layouts, making it ideal for designing complex page structures. By setting the display property to “grid” on a container, you can define rows and columns, providing precise control over the placement of elements within the grid.

.grid-container {
display: grid;
grid-template-columns: 1fr 2fr 1fr;
}