使 flex 容器采用内容的宽度，而不是宽度 100%

Question

In the below example, I have a button with the following styles...

.button-flexbox-approach {
    /* other button styles */
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1.5rem 2rem;
}

http://codepen.io/3stacks/pen/JWErZJ

But it automatically scales to 100% instead of the width of the content. You can set an explicit width, but then that doesn't allow your text to wrap naturally.

How can I make a button that has the inner text centered with flexbox, but doesn't grow to fit the size of the container?

 .container { width: 100%; height: 100%; } .button { /* Simply flexing the button makes it grow to the size of the container... How do we make it only the size of the content inside it? */ display: flex; justify-content: center; align-items: center; -webkit-appearance: none; border-radius: 0; border-style: solid; border-width: 0; cursor: pointer; font-weight: normal; line-height: normal; margin: 0; position: relative; text-align: center; text-decoration: none; padding: 1rem 2rem 1.0625rem 2rem; font-size: 1rem; background-color: #D60C8B; border-color: #ab0a6f; color: #fff; } .one { margin-bottom: 1rem; } .two { /* You can put an explicit width on that, but then you lose the flexibility with the content inside */ width: 250px; }

 <div class="container"> <p> Button one is flexed with no width and it grows to the size of its container </p> <p> <a class="button one" href="#">Button</a> </p> <p> Button two is flexed with an explicit width which makes it smaller, but we have no flexibility for changing the content </p> <p> <a class="button two" href="#">Button 2</a> </p> </div>

Answer 1

Instead of display: flex on the container, use display: inline-flex .

This switches the container from block-level (which takes the full width of its parent) to inline-level (which takes the width of its content).

This sizing behavior is similar to display: block vs. display: inline-block .

For a related problem and solution see:

• Make flex items take content width, not width of parent container

Answer 2

EDIT: Michael_B pointed out in his answer that inline-flex on the parent is the correct property for this use-case. I've updated my blog post accordingly.

It's not ideal, but if you wrap the button in a container that is inline-block, the button will scale naturally with the content, like so:

 .button { /* other button styles */ display: flex; justify-content: center; align-items: center; padding: 1.5rem 2rem; }

 <div style="display: inline-block;"> <a class="button">Button</a> </div>

You can then set the max-width on the container and the text will wrap to multiple lines, but retain the correct vertical centering.

I've detailed this in my most recent blog post: https://lukeboyle.com/css-buttons-solved-flexbox/