:before element not displaying properly in firefox - html

Question

Why does firefox misplace the :before element??
<div id='remember_forgot' class='no_hl'>
<div>
<input id='remember_me' type='checkbox'>
<label for='remember_me'>Remember me</label>
</div>
</div>
* {
font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
font-size: 14px;
line-height: 1.3;
font-weight: normal;
}
input[type='checkbox'] {
display: none;
}
#remember_forgot {
display: flex;
align-items: center;
justify-content: space-between;
margin: 2px 0;
}
#remember_forgot>div {
position: relative;
display: flex;
align-items: center;
}
#remember_me+label:before {
position: relative;
top: 1px;
content: "";
display: block;
float: left;
width: 13px;
height: 13px;
margin-right: 4px;
font-size: 15px;
line-height: 0.8;
border: 1px solid black;
}
#remember_me:checked+label:before {
content:'✓';
color: black;
}
#remember_me+label {
display: inline-block;
margin-left: 0px;
color: black;
font-size: 13px;
}
#remember_me+label:hover {
color: #e1b941;
}
#remember_me,
#remember_me+label,
#forgot {
cursor: pointer;
}
#remember_me+label {
transition: 0.2s all;
}
All of the relevant code is here in the fiddle: http://jsfiddle.net/kjf8h5m6/7/
When I open it in chrome the checkbox :before element is properly centered:
But when it is viewed in firefox the checkbox looks like it is not centered:
This is very annoying.. please help!

Answer 1

(Left is chrome, right is firefox)
Removing the wildcard line-height: *{line-height:1.3;}, and adding a line-height of 1.5 to the label element solves this in both Firefox and Chrome.
Working fix: http://jsfiddle.net/kjf8h5m6/9/