.btnsel {
    background-color: transparent;
    border: 1px solid #0ff; /* Cyan */
    color: #0ff;
    padding: 10px 20px;
    border-radius: 50%;
    width: 60px; 
    height: 60px;
    margin-bottom: 15px;
    margin-right: 10px;
    font-size: 15px;
    font-weight: bold;
    border-radius: 50px;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 0 10px #0ff, 0 0 5px #0ff, 0 0 5px #0ff, 0 0 5px #0ff;
}

.btnsel:hover {
    background-color: #0ff;
    color: #000;
    box-shadow: 0 0 5px #fff, 0 0 15px #fff, 0 0 25px #fff, 0 0 35px #fff;
    
}

.btnsel.activo {
    background-color: #00ff08;
    color: #000;
    border-color: #007bff;
  }

.btn {
    background-color: transparent;
    border: 1px solid #0ff; /* Cyan */
    color: #0ff;
    padding: 10px 20px;
    border-radius: 50%;
    margin-bottom: 15px;
    margin-right: 10px;
    font-size: 18px;
    font-weight: bold;
    border-radius: 50px;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 0 10px #0ff, 0 0 5px #0ff, 0 0 5px #0ff, 0 0 5px #0ff;
}
.btn:hover {
    background-color: #00ff08;
    color: #000;
    box-shadow: 0 0 5px #fff, 0 0 15px #fff, 0 0 25px #fff, 0 0 35px #fff;
}