JSFiddle - React, Tailwind, and code Playground

HTML

<div class="wrapper">
    <button type="button" class="new_button">Create New</button>
    <form name="input" action="" method="post">
        Search: 
        <input type="text" name="search_campaign" class="search_input"></input>
        <input type="submit" value="Submit"></input>
    </form>
</div>

CSS

.wrapper
{
    background-color: #cccccc;
    width: 100%;
    height: 50px;
}

.new_button
{
    float: left;
    min-width: 120px;
}

.search_input
{
    width: 30%;
}