JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">

<div class="checkbox">
  <input type="checkbox" id="profile_notifications" value="" checked/>
  <label for="profile_notifications">
    I agree
  </label>
</div>

CSS

/* Checkboxes */

.checkbox input[type="checkbox"] {
  display: none;
}

.checkbox label {
  padding-left: 0;
}

.checkbox label:before {
  content: "";
  width: 20px;
  height: 20px;
  display: inline-block;
  vertical-align: bottom;
  margin-right: 10px;
  line-height: 20px;
  text-align: center;
  border: 1px solid #ccc;
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
  font-family: "FontAwesome";
}

.checkbox input[type="checkbox"]:checked+label::before {
  content: "\f00c";
}