html, body {
    padding: 2px;
    height:100%;
    width: 100%;
    margin:0;
    display: flex;
    flex-direction: column;
}


h1, h2, h3 {
    vertical-align: middle;
    text-align: center;
}

form {
    text-align: center;
    font-size: larger;
    max-width: 100%;
}

#logo {
    display: block;
    margin: 0 auto;
    width: 5%;
    height: auto;
}

#tabla-container {
    width: 100%;
    height: 100%;
}

.mi-tabla {
  border-collapse: collapse;
  width: 35%;
  margin: auto;
  table-layout: fixed;
  text-align: center;
  font-size: 1.2vw;
  white-space: nowrap;
}

.mi-tabla th,
.mi-tabla td {
  border: 1px solid black;
  padding: 8px;
}

.mi-tabla tr:nth-child(even) {
  background-color: #f2f2f2; /* gris claro */
}

.mi-tabla tr:nth-child(odd) {
  background-color: #ffffff; /* blanco */
}

.celdaCambio {
  background-color: rgb(255, 51, 51, 0.6);
}

.celdaFinal {
  background-color: rgb(230, 229, 215);
}

@media (max-width: 768px) {

    #logo {
        display: block;
        margin: 0 auto;
        width: 25%;
        height: auto;
    }

    .mi-tabla {
      width: 90%;
      font-size: 3.5vw;
    }

}

footer {
    bottom: 0;
    text-align: left;
    padding-left: 10px;
    padding-bottom: 25px;
    font-size: small;
    font-style: oblique; 
    width: auto;
}