CSS layout flex implements div cross arrangement and bottom alignment method

When I was writing a page using wordpress recently, the designer came up with a web page layout pattern that I had never encountered before. Its rendering on a computer (resolution greater than 768px) is as follows:

On mobile phones (resolution is less than or equal to 768px), it is required to be arranged like this:

I thought of two methods

The first is to use bootstrap's row and col-md together with col-md-push and col-md-pull to achieve. The code is as follows:

Effect on computer:

Effect on mobile phone:

##Use bootstrap method You need to write multiple rows (I tried to use one row to achieve it, but failed). Another thing to note is that in the col-md layer, it is best not to add additional classes (styles) if you need to control the elements in the inner layer. (In the above example, it is pictures and text). For example, if you add padding, you can add a layer of p to write the style.

The second method uses flex-direction: row-reverse in flex layout to implement, the code is as follows:

The effect on the computer is as follows:

The effect on the mobile phone is as follows:

You can see that it is implemented with flex To be more flexible, all p's are arranged in rows. The key is to arrange the even rows in reverse:

.R:nth-child(even) { flex-direction: row-reverse; }, and then arrange it normally on the mobile phone.R { display: block; width: 100%; }.

I also found that using flex can easily achieve bottom alignment of two ps. The specific code is as follows:

In fact, let p in C take the main axis as x (when arranged by row, the main axis is x, when flex-diretion is not specified, the default is to arrange by row), the arrangement direction is row, and then let p all be in The y-axis (cross axis) is at the bottom

align-items: flex-end;

The effect is as follows:

##Of course, other methods can also be used to achieve this. For example, let C be positioned relatively, let one p in C be positioned absolutely, and then set bottom to 0. The code is as follows, and the effect is the same as above.

But obviously, it is easier to implement with flex.

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