<!-- this script is provided by www.htmlbestcodes.com coded by: Kerixa Inc. -->
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/5.0.0/normalize.min.css">
<style>
@import url("https://fonts.googleapis.com/css?family=Raleway:400,400i,700");
html, body {
  width: 100%;
  height: 100%;
  padding: 0;
  margin: 0;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
}

.search-box {
  border: solid 5px black;
  display: inline-block;
  position: relative;
  border-radius: 50px;
}
.search-box input[type="text"] {
  font-family: Raleway, sans-serif;
  font-size: 20px;
  font-weight: bold;
  width: 50px;
  height: 50px;
  padding: 5px 40px 5px 10px;
  border: none;
  box-sizing: border-box;
  border-radius: 50px;
  transition: width 800ms cubic-bezier(0.5, -0.5, 0.5, 0.5) 600ms;
}
.search-box input[type="text"]:focus {
  outline: none;
}
.search-box input[type="text"]:focus, .search-box input[type="text"]:not(:placeholder-shown) {
  width: 300px;
  transition: width 800ms cubic-bezier(0.5, -0.5, 0.5, 1.5);
}
.search-box input[type="text"]:focus + span, .search-box input[type="text"]:not(:placeholder-shown) + span {
  bottom: 13px;
  right: 10px;
  transition: bottom 300ms ease-out 800ms, right 300ms ease-out 800ms;
}
.search-box input[type="text"]:focus + span:after, .search-box input[type="text"]:not(:placeholder-shown) + span:after {
  top: 0;
  right: 10px;
  opacity: 1;
  transition: top 300ms ease-out 1100ms, right 300ms ease-out 1100ms, opacity 300ms ease 1100ms;
}
.search-box span {
  width: 25px;
  height: 25px;
  display: flex;
  justify-content: center;
  align-items: center;
  position: absolute;
  bottom: -13px;
  right: -15px;
  transition: bottom 300ms ease-out 300ms, right 300ms ease-out 300ms;
}
.search-box span:before, .search-box span:after {
  content: '';
  height: 25px;
  border-left: solid 5px black;
  position: absolute;
  transform: rotate(-45deg);
}
.search-box span:after {
  transform: rotate(45deg);
  opacity: 0;
  top: -20px;
  right: -10px;
  transition: top 300ms ease-out, right 300ms ease-out, opacity 300ms ease-out;
}
</style>
<div class="search-box">
<input type="text" placeholder=" " /><span></span>
</div>
<script>
'use strict';
var searchBox = document.querySelectorAll('.search-box input[type="text"] + span');

searchBox.forEach(elm => {
  elm.addEventListener('click', () => {
    elm.previousElementSibling.value = '';
  });
});
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