JSFiddle - React, Tailwind, and code Playground

HTML

<span id="number">Αριθμός:<span>
<input type="number" id="el1" />
<div id="el2">
    <img class="img1" src="yes.png" style="display:none" alt="" />
    <span id="spanID1" style="display:none">Λάθος ΑΜ.</span>
</div>
<input type="button" id="mybutton1" value="Διαγραφή" />

CSS

#number{float:right;}
#el1 {float:right;}
#el2 {float:left;position:relative;margin-left:5px;width:200px;height:20px}


#mybutton1 {float:left;cursor:pointer;margin-left:5px;}