.titulo{
    background-color: black;
    width: 100%;

}
.botonbuscar{
    background-color: rgb(83,57,132);
}
.cuadrado{
    background-color: rgb(83,57,132);
    color: white;
    font-size: x-large;
    width: 250px;
}
.btn-whatsapp {
    display:block;
    width:70px;
    height:70px;
    color: #fff;
    position: fixed;
    right:20px;
    bottom:20px;
    border-radius:50%;
    line-height:80px;
    text-align:center;
    z-index:999;
}