JSFiddle - React, Tailwind, and code Playground

HTML

Click on the div you want to fit/reset (except the first div)

<div class="wrapper">
  <div class="div"><span>Fixed</span></div>
  <div class="div"><span>Fluid (long long long long text)</span></div>
  <div class="div"><span>Fluid</span></div>
  <div class="div"><span>Fluid</span></div>
</div>

CSS

.wrapper {
  width: 100%;
  margin-top: 20px;
  border: 1px solid black;
  display: flex;
}

.div {
  white-space: nowrap;
  border-right: 1px solid black;
  transition: flex 1s;
  flex: 1 1 auto;
}

.div.selected{
  flex: 0 0 auto;
}

.div:first-child {
  min-width: 50px;
  background: #999;
  text-align: center;
}

.div:not(:first-child) {
  text-align: center;
}

.div:last-child {
  border-right: 0px;
}

div:not(:first-child) span {
  background: #ddd;
}

JavaScript

$(document).on("click", ".div:not(:first-child)", function(e) {
	let expanded = $('.selected');
  if (expanded) {
  	expanded.removeClass("selected");
  }
  $(this).addClass("selected");
});