#Cabecera{
    background-color: #f0f0f0;
    border-radius: 10px;
    padding: 10px;
    margin-bottom: 20px;
    background-color: #f0f0f0;
    border-radius: 10px;
    padding: 10px;
    font-size: xx-large;
    text-align:  center;
       
}

#myTable{
    font-size: smaller;
    
}

.visible{
    display: visible;
}

.oculto{
    display: none;
}

.ancho_completo{
    width: 100%;
}


img.centrada{
    display:block;
    margin:0 auto 0 auto;
}

img.izquierda{
    float:left;
    clear:left;
}

img.derecha{
    float:right;
    clear:right;
}