*{
    box-sizing: border-box;
    margin: 1rem;
    padding: 0;
    font-family: Arial, Helvetica, sans-serif;
   } 

 nav{
    height: 100px;
    background: #258a40;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: auto;
   }

   nav a {
    text-decoration: none;
    color: rgb(174, 238, 178);
    padding: 0 2rem;
    font-size: large;
   }

    .column-middle { 
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 1rem;
    text-align: center;}

    .image1 {
justify-content: center;

    }