style.css

html,
body {
  padding: 0;
  
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Oxygen,
    Ubuntu, Cantarell, Fira Sans, Droid Sans, Helvetica Neue, sans-serif;
}

a {
  color: blue;
  text-decoration: none;
}

* {
  box-sizing: border-box;
}

main {
  min-height: 1vh;
  padding: 4rem 2rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  color: black;
}

.title {
  margin: 0;
  line-height: 1.15;
  font-size: 4rem;
}

.title,
.description {
  text-align: center;
}

.description {
  margin: 4rem 0;
  line-height: 1.5;
  font-size: 1.5rem;
}

.code {
  background: #ffffff;
  border-radius: 5px;
  padding: 0.75rem;
  font-size: 1.1rem;
  font-family: Menlo, Monaco, Lucida Console, Liberation Mono, DejaVu Sans Mono,
    Bitstream Vera Sans Mono, Courier New, monospace;
}

.grid {
  display: flex;
  align-items: stretch;
  justify-content: stretch;
  flex-wrap: wrap;
  max-width: 600px;
}
.mySpanClass { font-size:1.2em; }


.card {
  margin: 1rem;
  padding: 1.5rem;
  text-align: left;
  color: inherit;
  text-decoration: none;
  border: 1px solid #eaeaea;
  border-radius: 10px;
  transition: color 0.15s ease, border-color 0.15s ease;
  max-width: 300px;
}

.card:hover,
.card:focus,
.card:active {
  color: #0070f3;
  border-color: #0070f3;
}

.card h2 {
  margin: 0 0 1rem 0;
  font-size: 1.5rem;
}

.card p {
  margin: 0;
  font-size: 1.25rem;
  line-height: 1.5;
}

@media (max-width: 600px) {
  .grid {
    width: 100%;
    flex-direction: column;
  }
}
body {
    background-color: lightblue; /* Change to your desired color */
}
footer {
  background: darkblue;
  color: #fff;
  text-align: center;
  padding: 10px 10px 10px 10px;
  position: fixed;
  bottom: 0;
  width: 100%;
}