JSFiddle - React, Tailwind, and code Playground

HTML

</br><span id="spanid" >
<input type="text" class="txtSearch140" id="MainContent_usSearch_txtSearch" value="What are you looking for?" name="ctl00$MainContent$usSearch$txtSearch"><input type="submit" class="btnSearch" id="MainContent_usSearch_btnSearch" value="Search" name="ctl00$MainContent$usSearch$btnSearch">
</span>

CSS

.txtSearch140
{
    padding:2px 2px;
    border:solid 0px #D9DADB;
    width:140px;
    height:16px;
    margin:0px 0px 0px 0px;
    color:#9f9f9f;
    font-size:10px;
    font-family:Verdana, Geneva, Arial, Helvetica, sans-serif;
    background:#ffffff;
}

.btnSearch
{
    border:solid 0px #D9DADB;
    width:60px;
    height:22px;
    font-size:10px;
    font-family:Verdana, Geneva, Arial, Helvetica, sans-serif;
    font-weight:bold;
    background:#D9DADB;
    padding-bottom:0px;
}
#spanid
{
   margin: 0;
    padding: 0; 
}
#spanid
{
    display: inline-block;
    border: 1px solid #D9DADB;
    height: 22px;
    overflow: hidden;
}