Aligning an image vertically within a circular button using Bootstrap 4

Having trouble vertically aligning a plus image in the center of a circle button? I can't seem to make it work without adjusting margins.

Is there a more Bootstrap-friendly way to achieve this?

Below is the code snippet:

.btn-circle {
  background-color: blue;
  height: 60px;
  width: 60px;
  border-radius: 50%;
}

/* the button is supposed to be a circle, but for some reason it's not showing up like that in this snippet */
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" integrity="sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous">
<a class="btn btn-circle mr-3" data-toggle="collapse" href="#collapseExample" aria-expanded="false" aria-controls="collapseExample"><img src="https://res.cloudinary.com/dt9b7pad3/image/upload/v1499509391/58a2031e6af142ce619ba2a2_plus-symbol_y6vqca.svg" height="20"></a>

csstwitter-bootstrapbootstrap-4

Answer №1

To create the <a..></a> element with a display:flex property, you can add the built-in d-flex class to it.

<a class="btn btn-circle mr-3 d-flex justify-content-center align-items-center" data-toggle="collapse" href="#collapseExample" aria-expanded="false" aria-controls="collapseExample"><img src="https://res.cloudinary.com/dt9b7pad3/image/upload/v1499509391/58a2031e6af142ce619ba2a2_plus-symbol_y6vqca.svg" class="" height="20"></a>

Then, apply the appropriate utility classes to center the element: 

justify-content-center align-items-center

Answer №2

Have you considered this approach? I centered the <a> tag with the <img> vertically using the following CSS:

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

Your custom border-radius was being overridden by Bootstrap, so I applied !important to it.

.btn-circle {
  background-color: blue;
  height: 60px;
  width: 60px;
  border-radius: 50% !important;
}
.btn-circle a{
  display: block;
  width: 20px;
  height: 20px;
  position: relative;
  top: 50%;
  -webkit-transform: translateY(-50%);
  -ms-transform: translateY(-50%);
  transform: translateY(-50%);
}
.btn-circle img{
  width: 100%;
  height: 100%;
}

/* The button should appear as a circle, but there seems to be an issue with the display in this snippet */
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" integrity="sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous">
<a class="btn btn-circle mr-3" data-toggle="collapse" href="#collapseExample" aria-expanded="false" aria-controls="collapseExample"><img src="https://res.cloudinary.com/dt9b7pad3/image/upload/v1499509391/58a2031e6af142ce619ba2a2_plus-symbol_y6vqca.svg"></a>

Answer №3

.btn-circle {
  background-color: red;
  height: 50px;
  width: 50px;
  border-radius: 50%;
  display: flex;
  align-items: center;
}
<div class="container">
    <a class="btn btn-circle mr-3 d-flex justify-content-center align-items-center" data-toggle="collapse" href="#collapseExample" aria-expanded="false" aria-controls="collapseExample">
        <img style="height: 25px;padding-left:10px;" src="https://res.cloudinary.com/dt9b7pad3/image/upload/v1499509391/58a2031e6af142ce619ba2a2_plus-symbol_y6vqca.svg" class="" height="15">
    </a>
</div>

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