How to center text inside :before pseudo element?
From MDN:
[the
:beforepseudo-element] is inline by default
Giving inline elements a width does nothing, so you need to style it as display: block (or inline-block if that is more appropriate). It also turns out that you need to adjust the left value to approximately -88px to get the text centred over the circle.
span {
border-radius: 50%;
background-color: #d8d9dd;
border: 6px solid #262c40;
width: 25px;
height: 25px;
margin: 30px 0 0 40px;
display: block;
}
span:before {
content: attr(data-value);
position: relative;
white-space: pre;
display: inline;
top: -27px;
left: -88px;
width: 200px;
text-align: center;
display: block;
}<span data-value="November 2016"></span>
<span data-value="May 2016"></span>The best thing would be to position the before pseudo element absolutely with respect to the span using the popular centering technique:
top: 0;
left: 50%;
transform: translate(-50%, -25px);
Note that -25px is to offset the text above the circles (which has height 25px) - see demo below:
span {
border-radius: 50%;
background-color: #d8d9dd;
border: 6px solid #262c40;
width: 25px;
height: 25px;
margin: 30px 0 0 40px;
display: block;
position:relative;
}
span:before {
content: attr(data-value);
position: absolute;
white-space: pre;
display: inline;
top: 0;
left: 50%;
transform: translate(-50%, -25px);
}<span data-value="November 2016"></span>
<span data-value="May 2016"></span>Source