JSFiddle - React, Tailwind, and code Playground

HTML

<div id="toolbar">
            <i class="fa fa-search" aria-hidden="true"></i>
            <form action="" id="searchbox">
                <input id="search" type="text" value="" placeholder="Nhập tên cần tìm kiếm"/>      
            </form>
            <i class="fa fa-times" aria-hidden="true" id="delete"></i>
        </div>
        <link href="https://fonts.googleapis.com/css?family=Roboto:300,400,500,700" rel="stylesheet"> 
        <link href="//maxcdn.bootstrapcdn.com/font-awesome/4.6.3/css/font-awesome.min.css" rel="stylesheet" type="text/css">

CSS

*{
    padding: 0px;
    margin: 0px;
    box-sizing: border-box;
    border: none;
}
body{
    font-family: 'Roboto',sans-serif;
    font-size: 14px;
    font-weight: 500;
    line-height: 1.4;
    color: #2d2d2d;
    background-color: #eaeaea;
}
#toolbar{
    position: fixed;
    top:0;
    left: 0;
    width: 100%;   
    box-shadow: 0 4px 2px #0003;
    background: #fff;
    z-index: 9999;
    padding: 0 100px;
    display: flex;
}
#toolbar i {
    width: 50px;
    color: #9c9c9c;
    font-size: 30px;
    float: left;
    text-align: center;
    padding: 16px 0;
}
#searchbox {
    display: inline-block;
    position: relative;
    margin-left: 50px;
    flex-basis: 80%;
}
#search {
    display: block;
    font-size: 24px;
    color: #3b3b3b;
    padding: 16px;
    width: 100%;
}
#delete{
  float:right!important;
}