JSFiddle - React, Tailwind, and code Playground

HTML

<input type="button" value="x" class="input" />

CSS

input {
  margin: 0;
  padding: 0;
  border: none;
  font: inherit;
  line-height: normal;
}

.input {
    line-height:20px;
    font-size:20px;
    padding:10px;
    padding-bottom: 12px;
}