html, body {
    height: 100%;
    margin: 0;
}
body {
    display: flex;
    flex-direction: column;
    background-color: #fff;
}
.contenido {
    flex: 1 0 auto;
    background-image: url(../img/fondo-login.jpg);
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    display: flex;
    justify-content: center;
    align-items: center;
}

.pieLogin {
    flex-shrink: 0;
    width: 100%;
    height: 10%;
    min-height: 80px;
    background-color: #009f91;
    background-image: url(../img/axxon_blanco.png);
    background-size: auto 40%;
    background-repeat: no-repeat;
    background-position: center;
}

.cajaCentral {
    width: 100%;
    box-sizing: border-box;
    text-align: center;
    padding: 15vw 10vw 12vw 10vw;
}
#saludo {
    color: #585857;
    font-size: 10px;
}
#saludo .txt1, #saludo .txt2 {
    font-family: Montserrat;
}
#saludo .txt1 {
    font-size: 30px;
    font-weight: 100;
}
#saludo .txt2 {
    font-size: 18px;
    font-weight: 700;
}
#saludo h1 {
    font-family: Roboto;
    font-weight: 500;
    font-size: 130px;
    line-height: 1em;
    margin: 0;
    padding: 0 0 24px 0;
}
#saludo #correo {
    background-color: #ececec;
    border: none;
    border-radius: 15px;
    padding: 15px;
    color: #585857;
    font-family: Montserrat;
    font-size: 30px;
    line-height: 1em;
    width: 400px;
    max-width: calc(100% - 30px);
    height: 30px;
}
#error .cajaError {
    display: inline-block;
    width: 500px;
    max-width: 100%;
    border-radius: 12px;
    padding: 48px 0;
    margin-bottom: 20px;
    font-family: Montserrat;
    font-weight: 100;
    font-size: 18px;
    text-align: center;
    color: #585857;
    background-color: #ececec;
}
.boton {
    font-family: Montserrat;
    font-size: 18px;
    line-height: 1em;
    color: #fff;
    background-color: #ff5353;
    border: none;
    border-radius: 12px;
    width: 230px;
    padding: 15px;
    transition: 0.3s;
}
.boton:hover {
    cursor: pointer;
    background-color: #f88;
}
@media(max-width: 800px) {
    #saludo h1 {
        font-size: 100px;
    }
    #saludo #correo {
        font-size: 20px;
        width: 300px;
        padding: 10px 15px;
    }
}
@media(max-height: 850px) {
    .cajaCentral {
        padding: 13vw 10vw 6vw 10vw;
    }
    #saludo .txt1 {
        font-size: 24px;
    }
    #saludo .txt2 {
        font-size: 14px;
    }
    #saludo h1 {
        font-size: 100px;
    }
    #saludo #correo {
        font-size: 20px;
        width: 300px;
        padding: 10px 15px;
    }
    .pieLogin {
        height: 7%;
        min-height: 60px;
        background-size: auto 70%;
    }
}
@media(max-width: 850px) {
    #saludo h1 {
        font-size: 80px;
    }
}