Plantilla:Velocidad/styles.css

.contenedor{
    position: relative;
    display: inline-block;
    text-align: center;
}

.centrado{
    position: absolute;
    top: 50%;
    left: 50%;
  font-family: "arial", sans-serif;
  font-weight: 900;
  font-size: 240%;
    transform: translate(-50%, -60%);
}