.grid-2by
{
    display: grid;
}
body {
    background-image: url(pic-jesse-bg.jpg);
    margin: 0;
    padding: 0;
    height: 100%;
    width: 100%;
    text-align: center;
    background-repeat: no-repeat;
    background-size: cover;
    
}
header {
  margin: 0;
  position: absolute;
  text-align: center;
}
 nav div ul li {
  margin: 0;
  padding: 0;
    display: inline-block;
    font-weight: 400;
    text-align-last: center;
  }
nav div ul li a:hover {
    color: black;
}