body{
    margin: 0;
    position: relative;
    padding-bottom: 12em;/*espacio entre footer*/
    min-height: 100vh; /*toma tamaño maximo*/
}


.fondo {
    background: url('../img/Koby.jpg');
    background-repeat: no-repeat;
    background-size: cover;
    font-family: 'Century Gothic', sans-serif;
}

.titulo{
    text-align: center; /*margen de izquierda texto*/
    margin-top: 1%; /*margen de top*/
    margin-left: -0.6%; /*margen de izquierda*/
    margin-right: -0.5%; /*margen de derecha*/
    background-color: black; /*color fondo*/
    color: gray; /*color letra*/
}

.subtitulo{
    text-align: left; /*margen de izquierda texto*/
    color: gray; /*color letra*/
}


.contenido_uno{
    margin-right: 55%; /*margen de derecha*/
    margin-left: 1%;
    color: white; /*color letra*/
    
}

.contenido_dos{
    margin-right: 60%; /*margen de derecha*/
    margin-left: 1%;
    color: white; /*color letra*/
}

.contenido_tres{
    margin-right: 55%; /*margen de derecha*/
    margin-left: 1%;
    color: white; /*color letra*/
}

.table {          
    overflow-x: auto;
    margin-left: 1%;
}

td, th {
    border: 1px solid #ccc; /*espesor borde*/
    text-align: left; /*texto a la izquierda*/
    padding: 6px; /*espacio entre texto y borde*/
    color: white; /*color del texto*/
  }


.footer {
    background-color: black;
    color: white;

    
    text-align: center;
    position: absolute; /*quieto*/
    bottom: 0;
    width: 100%;
}

.footer p {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    font-size: 25px;
}

.footer a {
    color: white;
    text-decoration:none;
}

@media (min-width < 50%)  { 
    /*celu*/
    }

@media (min-width:1281px) { 
    /*pc*/ 
    }


.btn-neon{
    position: relative;
    display: inline-block;
    padding: 15px 30px;
    color: #fff;
    letter-spacing: 4px;
    text-decoration: none;
    font-size: 24px;
    overflow: hidden;
    transition: 2s;
    font-family: consolas;
    margin-left: 5%;
    margin-top: 4%;
}

.btn-neon:hover{
    background: #a945c7;
    box-shadow: 0 0 10px #a945c7, 0 0 40px #a945c7, 0 0 80px #a945c7;
}
    
.btn-neon span{
        position: absolute;
        display: block;
    }

#span1{
    top: 0;
    left: -100%;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent,#a945c7);
}

.btn-neon:hover #span1{
    left: 100%;
    transition: 1s;
}

    #span3{
    bottom: 0;
    right: -100%;
    width: 100%;
    height: 2px;
    background: linear-gradient(270deg, transparent,#a945c7);
}

.btn-neon:hover #span3{
    right: 100%;
    transition: 1s;
    transition-delay: 0.5s;
}

#span2{
    top: -100%;
    right: 0;
    width: 2px;
    height: 100%;
    background: linear-gradient(180deg,transparent,#a945c7);
}

.btn-neon:hover #span2{
    top: 100%;
    transition: 1s;
    transition-delay: 0.25s;
}

#span4{
    bottom: -100%;
    left: 0;
    width: 2px;
    height: 100%;
    background: linear-gradient(360deg,transparent,#a945c7);
}

.btn-neon:hover #span4{
    bottom: 100%;
    transition: 1s;
    transition-delay: 0.75s;
}