#calculadora {
    border: 3px solid blue;
    border-radius: 10px;
    border-style: outset;
    margin: 0 auto;
    background-color:lightseagreen;
    width: 60% !important;
}

.lcd {
    margin-top: 10px;
    background-color: beige;
    border: 1px solid gray;
    border-style: inset;
    background: #feffe8;
    background-color: beige;
    border: 1px solid lightgray;
    border-radius: 7px;
    border-style: inset !important;
    text-align-last: center;
}
#pantalla {
    height: 60px;
    margin: 0px 20px 0;
    width: 130%;
}
#pantalla #txtNum {
    width: 70%;
    height: 40px;
    font-size: 24px;
    padding: 5px 5px 5px 50px;
}

.p-handle {
    border-right: 1px solid burlywood;
    border-radius: 7px 0 0 7px;
    position: absolute;
    background-color: bisque;
    cursor: move;
}

#pant-handle {
    width: 25px;
    height: 38px;
    margin: 11px 1px 1px 1px;
}

#mem-handle {
    width: 25px;
    height: 34px;
    margin: 1px;
}

#memory {
    height: 36px;
    font-size: 14px;
    padding: 8px 5px 0px 30px;
    margin-top: 0px;
    color: darkgray;
    width: 100%;

}


#mem-margen {
    height: 10px;
}

#calculadora > .row {
    margin: 20px 0 30px;
}

#teclado .row .row {
margin: 0 10px;
}
.container .panel-footer {
    margin-top: 20px;
    height: 3em;

}

@media (max-width: 767px) {
    #calculadora {
        width: 330px;
    }
    .bd2 {
        margin-top: 10px;
    }
}

@media (min-width: 768px) and (max-width: 991px) {
    #calculadora {
        width: 700px;
        /*margin: 0 auto;*/
    }
    .bd2 {
        margin-top: 0;
    }
}

@media (min-width: 992px) and (max-width: 1199px) {
    #calculadora {
        width: 700px;
        margin: 0 auto;
    }
    #teclado .row .row {
        margin: 0 0px;
    }
    .bd2 {
        margin-top: 0;
    }
}

@media (min-width: 1200px) {
    #calculadora {
        width: 800px;
    }
    .bd2 {
        margin-top: 0;
    }
}

@media (orientation:landscape) {
    #xcalc_main {
        width: 100vh;
    }
}

@media (orientation:portrait) {
    #xcalc_main {
        width: 100%;
    }
}


/* ESTILOS PARA LA EXPLICACIĂ“N DEL EJERCICIO */

#det_ejercicio h3 {
    background-color: lightblue;
    border-top: 1px solid black;
    padding-bottom: 0.5ex;
}

#det_ejercicio h2 {
    color: deepskyblue;
}

#det_ejercicio ul {
    list-style-type: none;
}

.ui-state-hover2, .ui-state-highlight2 {
    border: 1px solid green;
    background: greenyellow;
    /*color: greenyellow;*/
    /*background: -moz-linear-gradient(-45deg, #feffe8 0%, #d6dbbf 100%);
    background: -webkit-linear-gradient(-45deg, #feffe8 0%, #d6dbbf 100%);
    background: linear-gradient(135deg, #feffe8 0%, #d6dbbf 100%);*/
}

/*.ui-draggable-handle {
    z-index: 1;
}*/