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文本与图像垂直对齐？

分类: 技术问答 • 2022-04-08 19:44:00

文本与图像垂直对齐？

问题描述：

Why won't vertical-align: middle work? And yet, vertical-align: top does work.

<div>
   <img style="width:30px;height:30px">
   <span style="vertical-align:middle">Doesn't work.</span>
</div>

转载于:https://stackoverflow.com/questions/489340/vertically-align-text-next-to-an-image

答

Actually, in this case it's quite simple: apply the vertical align to the image. Since it's all in one line, it's really the image you want aligned, not the text.

<!-- moved "vertical-align:middle" style from span to img -->
<div>
  <img style="vertical-align:middle" src="https://placehold.it/60x60">
  <span style="">Works.</span>
</div>

Tested in FF3.

Now you can use flexbox for this type of layout.

.box {
   display: flex;
   align-items:center;
}
<div class="box">
    <img src="https://placehold.it/60x60">
    <span style="">Works.</span>
</div>

</div>

答

Because you have to set the line-height to the height of the div for this to work

答

You probably want this:

<div>
   <img style="width:30px; height:30px;">
   <span style="vertical-align:50%; line-height:30px;">Didn't work.</span>
</div>

As others have suggested, try vertical-align on the image:

<div>
   <img style="width:30px; height:30px; vertical-align:middle;">
   <span>Didn't work.</span>
</div>

CSS isn't annoying. You just don't read the documentation. ;P

答

Here are some simple techniques for vertical-align:

One-line vertical-align:middle

This one is easy: set the line-height of the text element to equal that of the container

<div>
  <img style="width:30px; height:30px;">
  <span style="line-height:30px;">Doesn't work.</span>
</div>

Multiple-lines vertical-align:bottom

Absolutely position an inner div relative to its container

<div style="position:relative;width:30px;height:60px;">
  <div style="position:absolute;bottom:0">This is positioned on the bottom</div>
</div>

Multiple-lines vertical-align:middle

<div style="display:table;width:30px;height:60px;">
  <div style="display:table-cell;height:30px;">This is positioned in the middle</div>
</div>

If you must support ancient versions of IE <= 7

In order to get this to work correctly across the board, you'll have to hack the CSS a bit. Luckily, there is an IE bug that works in our favor. Setting top:50% on the container and top:-50% on the inner div, you can achieve the same result. We can combine the two using another feature IE doesn't support: advanced CSS selectors.

<style type="text/css">
  #container {
    width: 30px;
    height: 60px;
    position: relative;
  }
  #wrapper > #container {
    display: table;
    position: static;
  }
  #container div {
    position: absolute;
    top: 50%;
  }
  #container div div {
    position: relative;
    top: -50%;
  }
  #container > div {
    display: table-cell;
    vertical-align: middle;
    position: static;
  }
</style>

<div id="wrapper">
  <div id="container">
    <div><div><p>Works in everything!</p></div></div>
  </div>
</div>

Variable container height vertical-align:middle

This solution requires a slightly more modern browser than the other solutions, as it makes use of the transform: translateY property. (http://caniuse.com/#feat=transforms2d)

Applying the following 3 lines of CSS to an element will vertically centre it within its parent regardless of the height of the parent element:

position: relative;
top: 50%;
transform: translateY(-50%);

答

For the record, alignment "commands" shouldn't work on a SPAN, because it is an in-line tag, not a block-level tag. Things like alignment, margin, padding, etc won't work on an in-line tag because the point of inline is not to disrupt the text flow.

CSS divides HTML tags up into two groups: in-line and block-level. Search "css block vs inline" and a great article shows up...

http://www.webdesignfromscratch.com/html-css/css-block-and-inline/

(Understanding core CSS principles is a key to it not being quite so annoying)

答

Basically, you'll have to get down to CSS3.

-moz-box-align: center;
-webkit-box-align: center;

答

Another thing you can do is set the text's line-height to the size of the images within the <div>. Then set the images to vertical-align: middle;

That's seriously the easiest way.

答 

background:url(../images/red_bullet.jpg) left 3px no-repeat;

I generally use 3px in place of top. By increasing/decreasing that value, the image can be changed to the required height.

答

This code works in IE as well as FF:

<div>
  <img style="width:auto; height:auto;vertical-align: middle;">
  <span>It does work on all browsers</span>
</div>

答

On a button in jQuery mobile, for instance, you can tweak it a bit by applying this style to the image:

.btn-image {
    vertical-align:middle;
    margin:0 0 3px 0;
}

答

Use line-height:30px for the span so that text is align with the image:

<div>
  <img style="width:30px; height:30px;">
  <span style="line-height:30px;">Doesn't work.</span>
</div>

答

The technique used in the accepted answer works only for single-lined text (demo), but not multi-line text (demo) - as noted there.

If anyone needs to vertically center multi-lined text to an image, here are a few ways (Methods 1 and 2 inspired by this CSS-Tricks article)

Method #1: CSS tables (FIDDLE) (IE8+ (caniuse))

CSS:

div {
    display: table;
}
span {
    vertical-align: middle;
    display: table-cell;
}

Method #2: Pseudo element on container (FIDDLE) (IE8+)

CSS:

div {
   height: 200px; /* height of image */
}

div:before {
  content: '';
  display: inline-block;
  height: 100%;
  vertical-align: middle;
  margin-right: -0.25em; /* Adjusts for spacing */
}

img {
    position: absolute;
}

span {
  display: inline-block;
  vertical-align: middle;
  margin-left: 200px;  /* width of image */
}

Method #3: Flexbox (FIDDLE) (caniuse)

CSS (The above fiddle contains vendor prefixes):

div {   
    display: flex; 
    align-items: center;    
}
img {
    min-width: 200px; /* width of image */
}

答

Multiline solution:

http://jsfiddle.net/zH58L/6/

<div style="display:table;width:30px;height:160px;">
    <img style="display:table-cell;width:30px;height:60px;padding:50px" src='...' />
    <div style="display:table-cell;height:30px;vertical-align:middle">
      Multiline text centered vertically
    </div>
</div>
<!-- note: img (height + 2x padding) must be equal to root div height -->

Works in all browers and ie9+

答

Change your div into a flex container:

div {display:flex;}


Now there are two methods to center the alignments for all the content:

Method 1:

div {align-items:center;}

DEMO

Method 2:

div * {margin-top:auto; margin-bottom:auto;}

DEMO

Try different width and height values on the img and different font size values on the span and you'll see they always remain in the middle of the container.

答

You have to apply vertical-align: middle to both elements to have it been centered perfectly.

<div>
  <img style="vertical-align:middle" src="http://lorempixel.com/60/60/">
  <span style="vertical-align:middle">Perfectly centered</span>
</div>

The accepted answer does center the icon around half of the x-height of the text next to it (as defined in the CSS specs). Which might be good enough but can look a little bit off, if the text has ascenders or descenders standing out just at top or bottom:

centered icon comparison

On the left, the text is not aligned, on the right it is as shown above. A live demo can be found in this article about vertical-align.

Has anyone talked about why vertical-align: top works in the scenario? The image in the question is probably taller than the text and thus defines the top edge of the line box. vertical-align: top on the span element then just positions it at the top of the line box.

The main difference in behavior between vertical-align: middle and top is that the first moves elements relative to the box's baseline (which is placed wherever needed to fulfill all vertical alignments and thus feels rather unpredictable) and the second relative to the outer bounds of the line box (which is more tangible).

</div>

答

Haven't seen a solution with margin in any of these answers yet, so here is my solution to this problem.

This solution only works if you know the width of your image.

The HTML

<div>
    <img src="https://placehold.it/80x80">
    <span>This is my very long text what should align. This is my very long text what should align.</span>
</div>

The CSS

div {
  overflow:hidden;
}
img {
   width:80px
   margin-right:20px;
   display:inline-block;
   vertical-align:middle;
}
span {
   width:100%;
   margin-right:-100px;
   padding-right:100px;
   display:inline-block;
   vertical-align:middle;
   box-sizing:border-box;
   -moz-box-sizing:border-box;
   -webkit-box-sizing:border-box;
}

答

Write these span properties

span{
    display:inline-block;
    vertical-align:middle;
}

Use display:inline-block; When you use vertical-align property.Those are assosiated properties

答

You can set image as inline element using display property

<div>
  <img style="vertical-align: middle; display: inline;" src="https://placehold.it/60x60">
  <span style="vertical-align: middle; display: inline;">Works.</span>
</div>

</div>

答

Firstly inline CSS is not recommended at all, it really mess up your HTML.

For aligning image and span, you can simply do vertical-align:middle. 

.align-middle {
  vertical-align: middle;
}
<div>
  <img class="align-middle" src="https://i.stack.imgur.com/ymxaR.png">
  <span class="align-middle">I'm in the middle of the image! thanks to CSS! hooray!</span>
</div>

</div>

答

It can be confusing, I agree. Try utilizing table features. I use this simple CSS trick to position modals at the center of the webpage. It has large browser support:

<div class="table">
    <div class="cell">
        <img src="..." alt="..." />
        <span>It works now</span>
    </div>
</div>

and CSS part:

.table { display: table; }
.cell { display: table-cell; vertical-align: middle; }

Note that you have to style and adjust the size of image and table container to make it work as you desire. Enjoy.

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