*{
    background-image: url(Fondos/fondo1.jpg);
    background-size: 100rem;
}
main{
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 40vh;
    background: #1a0321;
    font-family:consolas;
   
}
H1{
    font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif;
    color: white;
    text-align: center;
}
.encabezado{
    background: #a945c7;
    box-shadow: 0 0 10px #a945c7, 0 0 40px #a945c7, 0 0 80px #a945c7;
    transition-delay: 1s;
}
.btn-neon{
    position: relative;
    display: inline-block;
    padding: 15px 30px;
    color: #fff;
    letter-spacing: 4px;
    text-decoration: none;
    font-size: 24px;
    overflow: hidden;
    transition: 0.2s;
}
.btn-neon:hover{
    background: #a945c7;
    box-shadow: 0 0 10px #a945c7, 0 0 40px #a945c7, 0 0 80px #a945c7;
    transition-delay: 1s;
 }
.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;
}
.cuadro{
    display: block;
    border: 3px solid rgba(2,1,0,.3);
 
}