Center Twitter Bootstrap 3 Glyphicons in buttons - css

Question

I am now using Twitter Bootstrap 3 RC2 as well as Twitter Bootstrap which has moved into a separate repository. I have noticed, if used in a button with text the icon is not centered very well:
The icon and the text have the same bottom line, but I believe for a good looking button the icon should be centered based on the text, shouldn't it? Any idea how to achieve this?
http://bootply.com/74652

Answer 1

Move the text out of the <span> with the glyphicon and apply vertical-align: middle; to the <span>
<button class="btn btn-default">
<span class="glyphicon glyphicon-th" style="vertical-align: middle;"></span> Centered
</button>
Demo
This works in Bootstrap 4 with Font Awesome icons like so
<button class="btn btn-default" style="vertical-align: middle;">
<i class="fa fa-times"></i> Centered
</button>

Answer 2

Apply a vertical-align: -{N}px; style on the .glyphicon-th to shift it N pixels up/down.

Answer 3

For some vertical-align might not work due to positioning: If you look into .glyphicon class you'll see it is set to relative, try setting it to 'inherit' e.g:
.glyphicon.v-centered {
position: inherit;
vertical-align: middle;
}
This should also work for icons not in buttons, e.g. tabs.

Answer 4

Try vertical-align: middle; on .glyphicon-th:before

Answer 5

None of the methods above worked well for me by themselves, but using display: inline-block; vertical-align: middle on the elements did. It's the inline-block that seems to be key.
.vcenter * {
vertical-align: middle;
display: inline-block;
}
.btn i {
margin-left: 10px;
font-size: 20px;
}
with
<div class="vcenter">
<button class="btn btn-default btn-lg"><span>Centered</span><i class="glyphicon glyphicon-ok"></i></button>
<button class="btn btn-default"><span>Centered</span><i class="glyphicon glyphicon-ok"></i></button>
<button class="btn btn-default btn-sm"><span>Centered</span><i class="glyphicon glyphicon-ok"></i></button>
</div>
See http://www.bootply.com/UbY78zM8pD for live example.

Answer 6

I managed to do it like this:
.glyphicon.center:before {
vertical-align: middle;
}
and use <span class="glyphicon center glyphicon-th"></span>.

Answer 7

Problem: Glyph icon was 2 px too high above the button text. Fixed it as follows using examples here. Thank you (Alastair Maw).
I managed to get mine working as follows:
HTML
<div class="col-xs-12">
<a title="" class="btn btn-block btn-info oa-btn-spacer_homepage oa-ellipsis" role="button" href="default.aspx?action=page&name=creditcard">
<span class="glyphicon glyphicon-credit-card glyph_Credit"></span> Update Your Credit Card and Billing Information
</a>
</div>
CSS
#panelTopic .glyph_Credit {
vertical-align: middle;
display: inline-block;
padding-bottom:6px;
}

Answer 8

<button class="btn btn-default">
<span class="glyphicon glyphicon-th" style="font-size: 14px;"> </span>
<span style="font-size: 17px;">Not Centered</span>
</button>
please increase or decrease the font size according to your requirement

Answer 9

Other way
<button class="btn default" id="IdBack">
<i class="glyphicon glyphicon-hand-left"></i>
<b>Back</b>
</button>

Answer 10

Add a margin of the specific pixels or percentage. In my app, this worked beautifully, based on the dimensions of the area.
CSS:
.someWrapperClass button span {
margin-top: 120%;
}
HTML:
<div class="someWrapperClass">
<button type="button" ng-click="SomeMethod()">
<span class="glyphicon glyphicon-chevron-left"></span>
</button>
</div>