h1 {
    text-align: center;
    font-size: 60px;
    color: #15373c; 
}


.btn_cerrar {
    font-size: 24px;
    float: right;
    background-color: #333; 
    color: #fff; 
    border: none;
    padding: 10px 20px;
    border-radius: 50%; 
    cursor: pointer;
    transition: background-color 0.3s ease; 
}
.btn_cerrar:hover {
    background-color: #ff5722; 
}


.btn_abrir {
    padding: 20px 40px;
    background: linear-gradient(135deg, #00bcd4, #ff5722); 
    color: #fff; 
    font-size: 28px;
    border: none;
    border-radius: 10px; 
    cursor: pointer;
    transition: background 0.3s ease; 
}
.btn_abrir:hover {
    background: linear-gradient(135deg, #ff5722, #00bcd4); 
}


.modal {
    background-color: rgba(254, 254, 254); 
    position: fixed;
    top: 0;
    left: 0;
    width: 70%;
    height: 100%;
    justify-content: center;
    align-items: center;
    z-index: 1000; 
}

.modal iframe {
    width: 100%;
    height: 100%;
    border: none;
}


.btn_cerrar {
    font-size: 24px;
    float: right;
    background-color: #333; 
    color: #fff; 
    border: none;
    padding: 10px 20px;
    border-radius: 50%; 
    cursor: pointer;
    transition: background-color 0.3s ease; 
    position: absolute;
    top: 20px;
    right: 20px;
}