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Grid 1x2

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In attempting to solve separate issue where I noticed my top margins were considerably larger than in the video, I solved the problem we were both experiencing. The issue is in the Markup! When he pauses the video to make several copies of the grid items, I thought he meant to copy everything INCLUDING the section element. If you have 3 section elements (one for each grid layout) the nth-of-type(even) Will not work, because it does not appear to be counting instances of the div that are in separate sections. As soon as I delete the other sections and wrapped all 3 articles in ONE , the @media query functioned as demonstrated.

CSS Grid Layout introduces a two-dimensional grid system to CSS. Grids can be used to lay out major page areas or small user interface elements. This article introduces the CSS Grid Layout and the new terminology that is part of the CSS Grid Layout Level 1 specification. The features shown in this overview will then be explained in greater detail in the rest of this guide.

A grid is a set of intersecting horizontal and vertical lines defining columns and rows. Elements can be placed onto the grid within these column and row lines. CSS grid layout has the following features:

You can place items into a precise location on the grid using line numbers, names or by targeting an area of the grid. Grid also contains an algorithm to control the placement of items not given an explicit position on the grid.

You can define an explicit grid with grid layout. The Grid Layout specification is flexible enough to add additional rows and columns when needed. Features such as adding "as many columns that will fit into a container" are included.

Grid is a powerful specification that, when combined with other parts of CSS such as flexbox, can help you create layouts that were previously impossible to build in CSS. It all starts by creating a grid in your grid container.

All the direct children are now grid items. In a web browser, you won't see any difference to how these items are displayed before turning them into a grid, as grid has created a single column grid for the items. At this point, you may find it useful to work with the Grid Inspector, available as part of Firefox's Developer Tools. If you view this example in Firefox and inspect the grid, you will see a small icon next to the value grid. Click this and then the grid on this element will be overlaid in the browser window.

Grid tracks are defined in the explicit grid by using the grid-template-columns and grid-template-rows properties or the shorthand grid or grid-template properties. Tracks are also created in the implicit grid by positioning a grid item outside of the tracks created in the explicit grid.

Tracks can be defined using any length unit. Grid also introduces an additional length unit to help us create flexible grid tracks. The new fr unit represents a fraction of the available space in the grid container. The next grid definition would create three equal width tracks that grow and shrink according to the available space.

Repeat notation can be used for a part of the track listing. In this next example I have created a grid with an initial 20-pixel track, then a repeating section of 6 1fr tracks then a final 20-pixel track.

Repeat notation takes the track listing, and uses it to create a repeating pattern of tracks. In this next example, my grid will consist of 10 tracks, a 1fr track, and then followed by a 2fr track. This pattern will be repeated five times.

When creating our example grid we specifically defined our column tracks with the grid-template-columns property, but the grid also created rows on its own. These rows are part of the implicit grid. Whereas the explicit grid consists of any rows and columns defined with grid-template-columns or grid-template-rows.

When setting up an explicit grid or defining the sizing for automatically created rows or columns we may want to give tracks a minimum size, but also ensure they expand to fit any content that is added. For example, I may want my rows to never collapse smaller than 100 pixels, but if my content stretches to 300 pixels in height, then I would like the row to stretch to that height.

Grid has a solution for this with the minmax() function. In this next example I am using minmax() in the value of grid-auto-rows. This means automatically created rows will be a minimum of 100 pixels tall, and a maximum of auto. Using auto means that the size will look at the content size and will stretch to give space for the tallest item in a cell, in this row.

It should be noted that when we define a grid we define the grid tracks, not the lines. Grid then gives us numbered lines to use when positioning items. In our three column, two row grid we have four column lines.

Lines are numbered according to the writing mode of the document. In a left-to-right language, line 1 is on the left-hand side of the grid. In a right-to-left language, it is on the right-hand side of the grid. Lines can also be named, and we will look at how to do this in a later guide in this series.

In the following example I am placing the first two items on our three column track grid, using the grid-column-start, grid-column-end, grid-row-start and grid-row-end properties. Working from left to right, the first item is placed against column line 1, and spans to column line 4, which in our case is the far-right line on the grid. It begins at row line 1 and ends at row line 3, therefore spanning two row tracks.

The second item starts on grid column line 1, and spans one track. This is the default so I do not need to specify the end line. It also spans two row tracks from row line 3 to row line 5. The other items will place themselves into empty spaces on the grid.

The longhand values used above can be compressed onto one line for columns with grid-column, and one line for rows with grid-row. The following example would give the same positioning as in the previous code, but with far less CSS. The value before the forward slash character (/) is the start line, the value after the end line.

A grid cell is the smallest unit on a grid. Conceptually it is like a table cell. As we saw in our earlier examples, once a grid is defined as a parent the child items will lay themselves out in one cell each of the defined grid. In the below image, I have highlighted the first cell of the grid.

Gutters or alleys between grid cells can be created using the column-gap and row-gap properties, or the shorthand gap. In the below example, I am creating a 10-pixel gap between columns and a 1em gap between rows.

Any space used by gaps will be accounted for before space is assigned to the flexible length fr tracks, and gaps act for sizing purposes like a regular grid track, however you cannot place anything into a gap. In terms of line-based positioning, the gap acts like a thick line.

A grid item can become a grid container. In the following example, I have the three-column grid that I created earlier, with our two positioned items. In this case the first item has some sub-items. As these items are not direct children of the grid they do not participate in grid layout and so display in a normal document flow.

In this case the nested grid has no relationship to the parent. As you can see in the example it has not inherited the gap of the parent and the lines in the nested grid do not align to the lines in the parent grid.

In the current specification, we would edit the above nested grid example to change the track definition of grid-template-columns: repeat(3, 1fr), to grid-template-columns: subgrid. The nested grid will then use the parent grid tracks to layout items.

In this article, we took a very quick look at the possibilities of grid layouts. Explore and play with the code examples, and then move on to the next part of this guide, where we will really start to dig into the details of CSS Grid Layout.

You can define an explicit grid with grid layout. The Grid Layout specification is flexible enough to add additional rows and columns when needed. Features such as adding \"as many columns that will fit into a container\" are included. 041b061a72