Center a text between to floating elements

I am working on a navigation bar for my website. The navigation bar contains a menu icon, a header 'Reviews' and a search icon. The icons need to have a distance of 3% from the border. The problem is that I can't figure it out how I center the text. I think the problem is with the floating elements and I don't know how I center a floating element between to other elements(in this case two icons). I hope someone could provide me with an answer :)

This is the result:

the navigation bar

* {
  padding: 0px;
  margin: 0px;
}

#nav {
  width: 94%;
  background-color: blue;
  margin: 3%;
}

.menuButton {
  float: left;
}

#nav h1 {
  float: left;
}

.searchButton {
  float: right;
}

<!DOCTYPE html>
<html>

<head>
  <title> Reviews </title>
  <link rel="stylesheet" type="text/css" href="main.css">
  <meta charset="utf-8">
</head>

<div id="dropMenu"></div>

<body>
  <div id="nav">
    <img src="menu.jpg" class="menuButton">
    <h1> REVIEWS. </h1>
    <img src="search.jpg" class="searchButton">

  </div>

  <div id="content"></div>

  <div id="footer"></div>
</body>
</html>

Solution

Is this output are you expecting

Check output in codepen.io

* {
  padding: 0;
  margin: 0;
}

#nav {
  width: 100%;
  background-color: blue;
  margin: 3%;
}

.menuButton {
  float: left;
}



.searchButton {
  float: right;
}

.a {
  text-align: center;
}

<head>
  <title> Reviews </title>
  <link rel="stylesheet" type="text/css" href="main.css">
  <meta charset="utf-8">
</head>


<div id="dropMenu">



</div>

<body>

  <div id="nav">
    <img src="menu.jpg" class="menuButton">
    <h1 class="a"> REVIEWS. </h1>
    <img src="search.jpg" class="searchButton">


  </div>

  <div id="content">



  </div>

  <div id="footer">



  </div>


</body>