Text in button with icon is not centered vertically - html

Question

I am trying to create a button that has an icon, but when I add the icon the text isnt centered vertically. How can I fix this?
This is the code in HTML & CSS:
<a href="#">
<button class=" account signUp"><span class="icon-profile</span>button</button>
</a>
.signUp {
background-image: var(--orange-background);
border-image: var(--orange-background);
font-family: poppins;
font-weight: 600;
color: white;
}

Answer 1

but when I add the icon the text isnt centered vertically
Put the following two properties on its parent
.parent-of-icon-and-text {
display: grid;
place-content: center;
}
Please don't use a button and a link, choose one that best fits your scenario.
To use a button as a link, you can put it in a form.
.signUp {
background-image: var(--orange-background);
border-image: var(--orange-background);
font-family: poppins;
font-weight: 600;
color: white;
}
<form onsubmit="#">
<button type="submit" class="account signUp"><span class="icon-profile"></span>button</button>
</form>

Answer 2

Corrections
It is invalid HTML to place a <button> inside an <a>nchor. They are both interactive content and should never have inertactive content as a descendant node. <a>nchor has been removed. For more details refer to Can I nest a <button> element inside an <a> using HTML5?.
Typo in HTML, "> missing:
<span class="icon-profile"></span>
In CSS the font-family value of Poppins was misspelt as poppins (font-family values are case-sensitive).
Solution
The OP was incomplete so what is suggested in the example is as generic as possible. In the OP, span.icon-profile needs these two styles:
display: inline-block;
vertical-align: middle
vertical-align will set the tag's contents to a vertical position by either a pre-set value or a legnth value.
display: inline-block or table-cell is required by vertical-align
Further details are commented in the example below
/*
The actual CSS to resolve alignment issues explianed by OP is marked with a ✼ which are `display: inline-block` and `vertical-align: middle`
*/
#import url('https://fonts.googleapis.com/css2?family=Poppins:wght#300&display=swap');
/*
Global default for font
*/
:root {
font: 2ch/1 Poppins;
}
/*
Any rem unit measurements will reference 1rem to 2ch
*/
body {
font-size: 2ch;
}
button,
b {
display: inline-block; /*✼*/
font-weight: 300;
}
.sign-up {
font: inherit;
border-radius: 4px;
color: white;
background: #333;
}
.btn-link:hover {
outline: 1px solid cyan;
color: cyan;
cursor: pointer;
}
.btn-link:active {
outline: 2px solid cyan;
color: black;
background: white;
}
.icon-profile {
font-size: 1rem;
vertical-align: middle; /*✼*/
}
/*
content: '⚙️'
in HTML it's ⚙️
*/
.icon-profile::before {
content: '\002699\00fe0f';
}
<button class="account sign-up btn-link"><b class="icon-profile"></b> Profile</button>