body {
    background-color: black ;
    font-family: Arial, Helvetica, sans-serif;
   
  }
  h1{
          font-family: "Arial", sans-serif;
          text-align: center;
          font-size: 24px;
          font-weight: bold;
          color: #5EC989;
  }

  h2{
      
      font-family: "Arial", sans-serif;
      padding: 20px;    
      text-align: center;
      font-size: 20px;
      font-weight: bold;
      color: hsl(0, 5%, 81%);;
  }
  header {
      background-color: #373D3B;
      color: #fff;
      border-radius: 20px;
      padding: 10px 0;
      text-align: center;
  }
 #center {
    display: inline; 
    margin-right: 40px; 
}
li:hover{
    color:#5EC989;
}
ul{
    text-align: center;
}
.button-container {
    text-align: center; 
}

.button {
    display: inline-block;
    margin: 20px; 
    padding: 20px 40px;
    background-color: #373D3B;
    color: white;
    text-align: center;
    text-decoration: none;
    font-size: 18px;
    border: none;
    border-radius: 10px;
    cursor: pointer;
}

.button:hover {
    background-color:#5EC989;
}
a {
    text-decoration: none; 
    color: hsl(0, 5%, 81%);
    font-weight: bold; 
    font-size: 16px;
}

a:hover {
    color:white; 
}