@import url('https://fonts.googleapis.com/css?family=Open+Sans&display=swap');
*{
    box-sizing:border-box;
    border: none;
    padding: 0;
    margin: 0;
    outline: none;
    font-family: 'Open Sans', sans-serif;
    text-transform: uppercase;
    background-color: gray;
  
}

html , body {
    height: 100%;
}

.contenedor {
    width: 100%;
    height: 100%;
    background-color: gray;
}

.titulo {
    width: 100%;
    height: auto;
    text-align: center;
    padding: 10px;
    font-size: 1em;
    text-transform: uppercase;
    background-color: gray;
    color: white;
    margin-bottom: 1px;
}

.formu {
    width: 100%;
    height: auto;
    background-color: #00446A;

}

.formu > div {
    width: 100%;
    background-color: #00446A;
    margin-bottom: 1px;

}

.texto_a {
    width: calc(100% - 105px);
    padding: 5px;
    background-color: whitesmoke;

}

.boton {
    width: 100px;
    padding: 5px;
    background: #ff7e00;
    color: white;
}

.pie {
    display: flex;
    flex-wrap: nowrap;
}

.grabar {
    width: 50%;
    background-color: green;
    color: white;
    padding: 5px;
}

.salir {
    width: 50%;
    background-color: red;
    color: white;
    padding: 5px;
}