JSFiddle - React, Tailwind, and code Playground

HTML

<form>
  <input class="search-input"><input type="button" value="Найти" class="search-button">
</form>

CSS

.search-input, .search-button {
  box-sizing: border-box;
  border: 1px solid black;
  height: 30px;
  font-size: 14px;
}
.search-input {
  width: 400px;
  margin-right: 10px;
}
.search-button {
  padding-left:10px;
  padding-right: 10px;
  background-color: #CDE9F5;
}