body {
    margin: 0;
    font-family: Arial, sans-serif;
}

.solapa {
    position: fixed;
    top: 50%;
    right: 0;
    transform: translateY(-50%);
    background-color: #ff0000;
    color: #fff;
    padding: 5px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    z-index: 999;
    border-radius: 10px;
}

.solapa button {
    margin-bottom: 5px;
    padding: 5px;
    background-color: #ff0000;
    color: #fff;
    border: none;
    cursor: pointer;
}

.solapa button a{
    color: #fff;
}

.contenido {
    margin-left: 150px;
    /* Ancho de la solapa */
    padding: 20px;
}


/*-------------------------------------------------------------------------*/