navbar.css

@import url('https://fonts.googleapis.com/css?family=Poppins:400,500,600,700&display=swap');
*{
  box-sizing: border-box;
}

body{
  margin: 0;
  padding: 0;
}

.navbar{
  display: flex;
  position: relative;
  justify-content: space-between;
  align-items: center;
  color: dimgrey;
  font-family: 'Poppins', sans-serif;
}

.logo{
  font-size: 1.5rem;
  margin: 1rem;
  letter-spacing: 5px;
  text-transform: uppercase;
}

.navbar-links {
  height: 100%;
}

.navbar-links ul{
  margin: 0;
  padding: 0;
  display: flex;
}

.navbar-links li{
  list-style: none;
}

.navbar-links li a{
  text-decoration: none;
  color: dimgrey;
  font-weight: 250;
  font-size: 1.2rem;
  padding: 1rem;
  display: block;
}

.navbar-links li:hover{
  background: lightgrey;
  transition: .5s;
}

.toggle-button{
  position: absolute;
  top: 0.75rem;
  right: 1rem;
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 31px;
  height: 21px;
}

.toggle-button .bar{
  height: 3px;
  width: 100%;
  background-color: dimgrey;
  border-radius: 10px;
}

@media (max-width: 675px){
  .toggle-button{
    display: flex;
  }

  .navbar-links{
    display: none;
    width: 100%;
  }

  .navbar {
    flex-direction: column;
    align-items: flex-start;
  }

  .navbar-links ul{
    width: 100%;
    flex-direction: column;
  }

  .navbar-links li{
    text-align: center;
  }

  .navbar-links li a{
    padding: 0.5rem 1rem;
  }

  .navbar-links.active{
    display: flex;
  }
}