JSFiddle - React, Tailwind, and code Playground

HTML

<div id="migration_1" class="migration">
    <div class="input"><input type="checkbox" name="checkbox"></input></div>
    <div class="input"><input type="email" name="username"></input></div>
    <div class="input"><input type="password" name="password"></input></div>
    <div class="input"><input type="text" name="host"></input></div>
    <div class="folders"><input type="email" ></input></div>
    <div class="input"><input type="text" name="prefix"></input></div>
    <div class="buttons">
        <input type="button" name="verify" value="Verify" onClick="checkun('checklogin', JSON.stringify($('#migration_1').serializeArray()));"><br/><br/>
        <input type="button" name="delete" value="X" onClick="$('#migration_1').remove();"><br/><br/>
    </div>  
</div>
<br />
<div style="clear: both" />

ok
<div id="migration_2" class="migration">
    <div class="input"><input type="checkbox" name="checkbox"></input></div>
    <div class="input"><input type="email" name="username"></input></div>
    <div class="input"><input type="password" name="password"></input></div>
    <div class="input"><input type="text" name="host" value="migration_2"></input></div>
    <div class="folders"><input type="email" ></input></div>
    <div class="input"><input type="text" name="prefix"></input></div>
    <div class="buttons">
        <input type="button" name="verify" value="Verify" onClick="checkun('checklogin', JSON.stringify($('#migration_2').serializeArray()));"><br/><br/>
        <input type="button" name="delete" value="X" onClick="$('#migration_2').remove();"><br/><br/>
    </div>  
</div>

CSS

.migration > div {float:left}