JSFiddle - React, Tailwind, and code Playground

HTML

<header class="header">

    <div class="header__inner container">
      <div class="header__logo">
        <img src="images/activebox-logo.png" alt="logo">
      </div>
        <nav class="nav">
          <a class="nav__link" href="#">FEATURES</a>
          <a class="nav__link" href="#">WORKS</a>
          <a class="nav__link" href="#">OUR TEAM</a>
          <a class="nav__link" href="#">TESTIMONIALS</a>
          <a class="nav__link" href="#">DOWNLOAD</a>
        	</nav>
    </div>

</header>

CSS

body{
  margin: 0;
  font-family: 'Raleway', sans-serif;
  font-size: 14px;
  color: black;
  -webkit-font-smoothing: antialiased;
  background: white;
}

*,
*:before,
*:after{
  box-sizing: border-box;
}

h1, h2, h3, h4, h5, h6{
  margin: 0;
}
p{
  margin: 0 0 10px;
}

/* Container
===================================*/
.container{
  width: 100%;
  max-width: 1170px;
  margin: 0 auto;
  

}

/* Header
===================================*/

.header{

  width: 100%;
  height: 100px;

  position: absolute;	
  top: 0;
  left: 0;
  z-index: 1000;
  justify-content: space-between;
  
}
.header__inner{
  justify-content: space-between;
  display: flex;
  align-items: center;
  padding: 35px 0;
  //margin-left: 300px; 
  border-bottom: 1px solid #515369;

  
}
/* Nav
===================================*/
.nav{
  display: flex;
  font-size: 13px;
  font-weight: 700;
}
.nav__link{
  margin-left: 50px;
  //color: #fff;
  text-decoration: none;
  opacity: .75;

  transition: opacity .1s linear;
}
.nav__link: first-child{
  margin-left: 0;
}
.nav__link:hover{
  opacity: 1;
}

.header__logo {
  width: 100px;
  height: 50px;
  background: #eee;
}