JSFiddle - React, Tailwind, and code Playground

HTML

<ul class="custom">
    <li data-bullet="a">Item 1</li>
    <li data-bullet="aa">Item 2</li>
    <li data-bullet="ab">Item 3.1<br/>Item 3.2</li>
    <li data-bullet="c">Item 4</li>
    <li data-bullet="d">Item 5</li>
    <li data-bullet="de">Item 6</li>
</ul>

CSS

.custom {
    list-style:none;
    padding:0;
    margin:0;
}
.custom li:before {
    display:inline-block;
    content:attr(data-bullet);
    width:50px;
}

/*
.custom {
    list-style:none;
    padding:0;
    margin:0;
}
.custom li:before {
    display:inline-block;
    content:attr(data-bullet);
    position:relative;
    top:0;
    left:-50px;
}
.custom li {
    padding-left:50px;
}
*/