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

a {
    border-width: thick;
}

table {
    margin-left: auto;
    margin-right: auto;
    border-collapse:separate; 
    border-spacing:5em 2em;
    text-align: center;
}

td {
    margin-left:auto;
    margin-right:auto;
}

tr { 
    display: flex;
    flex-wrap: wrap;
    gap: 100px;
  }

.rainbow-text {
    background-image: linear-gradient(to left, violet, indigo, blue, green, yellow, orange, red);
  }

h2, h3, p {
    font-family: Arial;
    text-align: center;
    color: white
    
}

h1 {
    font-family: Arial;
    color: black;
    font-size: 2.5em;
    text-align: center;
    background-image: linear-gradient(to left, violet, indigo, blue, green, yellow, orange, red);
    text-shadow: 
    0 0 7px #fff,
    0 0 10px #fff,
    0 0 21px #fff,
    0 0 42px #fff,
    0 0 82px #fff;
}

h2 {
    font-size: 2em;
}

img {
    height: 300px;
}