.center-text {
    text-align: center;
    display: block;
    margin-left: auto;
     margin-right: auto;
}

body {
   background-color: aqua;
   color: black;
   font-family:Arial, Helvetica, sans-serif;
   margin: 10px;
   text-align: center;
}
div {
  justify-content: center;
}
table {
  justify-content: center;
}