h1 {
  color: red;
}
h2 {
  color: blue;
}
input[type=button] {
  background-color: #0000ff;
  color: white;
  padding: 12px 20px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  }
  .container {
  border-radius: 5px;
  background-color: #e0ffff;
  padding: 20px;
  border:2px solid #0000FF;}

p.a {
  text-align-last: right;
}

p.b {
  text-align-last: center;
}

p.c {
  text-align-last: justify;
}

h1.a {
  text-align-last: center;
}

img { border: 0; }

.mejoravin {
  text-decoration: none;
  color:#FFFFFF;
}

.mejoravin:hover {
  text-decoration: none;
  color: red;
}