body{
    min-height: 100vh;
    background-image: url("../images/fondo2.png");
    background-position: bottom;
    background-repeat: repeat-x;
}
.principal{
    min-height: 110vh;
    background-image: url("../images/fondo2.png");
    background-position: bottom;
    background-repeat: repeat-x;
}
.operaciones{
    display: inline-flex;
}
.respuesta{
    height: 0px;
    /* visibility: hidden; */
    display:none;
}
div.appbar > img {
    margin-bottom: -10px;
    padding: 0;
}
.img-overlay {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 75%;
    right: 0;
    text-align: center;
}
.loginUs{
    background-color:rgba(240,240,240,0.3);
    padding:10px;
    border-radius:5px;
    margin-bottom:50px
}
.img-overlay:before {
    content: ' ';
    display: block;
    /* adjust 'height' to position overlay content vertically */
    height: 20%;
}
.boton {
    /* matches 'btn-md' */
    padding: 10px 16px;
    font-size: 18px;
    line-height: 1.3333333;
    border-radius: 6px;
  }
  
  @media (max-width:760px) { 
      /* matches 'btn-xs' */
      .boton {
          padding: 1px 5px;
          font-size: 12px;
          line-height: 1.5;
          border-radius: 3px;
      }
  }
.formulario label input{
    display: none;
}
.appbar{
    position: relative;
    top: -1px;
    width: 100vw;
}
.appbar-z{
    z-index: 2;
}
@keyframes fadeIn {
    0% {
        opacity: 0;
    }
    100% {
        visibility: visible;
        opacity: 1;
    }
}
@keyframes fadeOut {
    0% {
        opacity: 1;
        visibility: visible;
    }
    100% {
        opacity: 0;
        visibility: hidden;
    }
}
.titulo{
    font-variant-caps: small-caps;
    font-weight: bold;
}
.bottom-bar{
    background-color: #009fe3;
}
.pinka{
    color: #000000;
}
/* .container{
    margin-bottom: 80px;
    min-height: 90vh;
} */
.volver{
    float: right;
    margin-right: 15px;
}
.esconder{
    display: none;
}
.sUltimo{
    width: 100%;
    position: absolute;
    bottom: 70px;
    right: 0;
    color:rgba(0, 0, 0, 0.87);
    font-size: 14px;
    font-weight: 500;
}
li.sUltimo{
    line-height: 20px;
}
li.sUltimo > p, li.sUltimo > h6{
    text-align: center;
    line-height: 10px;
}
/* li.sUltimo > div.nombres{
    padding-left: 90px;
} */
li.sUltimo > div.divider{
    margin-left: -20px;
    margin-bottom: 20px;
}
p.copyright {
    bottom: 0vh;
    color: #333;
    position: relative;
    font-size: 0.7em;
    font-style: italic;
    text-align: center;
    font-weight: bold;
}
div#loader{
    height: 100vh;
    width: 100vw;
}
.sidenav li>a{
    height: 40px;
    line-height: 40px;
}
ul#derecha li > h4.center{
    font-variant-caps: small-caps;
    font-weight: bold;
}
p.negrita-cursiva{
    font-size: 1.1em;
    font-weight: bold;
    font-style: italic;
}

/* PIANO */
.piano{
    width: 100%;
    height: 10rem;
    background-color: white;
    border: solid 1px black;
    border-left: none;
}
.espacio-negras{
    height: 70%;
    display: flex;
}
.espacio-blancas{
    height: 30%;
    display: flex;
}
.teclas-blancas{
    border-left: solid 1px black;
    width: calc(100%/9);
}
.inicio-fin{
    width: calc(100%/18);
}
.teclas-negras{
    display: flex;
    background-color: black;
    width: 10%;
    margin: 0 auto;
    color: white;
}
.separador{
    width: auto;
}
.check-negras{
    position: relative;
    top: 50%;
    left: 15%;
}
.check-negras p{
    margin: 0;
}
.check-blancas{
    position: relative;
    top: 0%;
    left: 20%;
}
.check-blancas p{
    margin: 5%;
}

.oculto{
    display:none;
}
.formantes{
    position: relative;
    top: -150px;
}
.indices{
    position: relative;
    top: -135px;
    float: left;
}