.body {
    display: flex;
    padding: 5px;
        position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    height: 500px; /* The only caveat is there needs to be a height defined */
    margin: auto;
    width: 1000px;
    justify-content: space-between;
}

.flxexbox2 {
    width: 50%;
}

.flxexbox {
    border: 2px solid black;
    width: 50%;
}

h3 {
padding: 0px;
  margin: 0px;
  line-height: 100%;
}

li a {
    color: black;
}