* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    text-shadow: 2px 2px 2px rgba(0, 0, 0, 0.2);
}

body {
    font-family: Arial, sans-serif;
    background-color: lightgreen;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    background-color: #4CAF50;
    color: white;
    padding: 10px 0;
    text-align: center;
    margin-bottom: 50px;
}
.modal {
    display: none; 
    position: fixed; 
    z-index: 1; 
    left: 0;
    top: 0;
    width: 100%; 
    height: 100%; 
    overflow: auto; 
    background-color: rgb(0,0,0); 
    background-color: rgba(0,0,0,0.4); 
    padding-top: 60px;
}
.modal-contenido {
    display: flex;
    flex-direction: column;
    min-height: 500px;
    align-items: center;
    justify-content: center;
}
iframe {
    background-color: #c0f1c0;
    padding: 20px;
    border: 1px solid #4b8051;
    width: 100%; 
    border-radius: 7px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    height: 85vh;
    width: 90%;
}
.modal {
    display: none; 
    position: fixed; 

    z-index: 1; 
    left: 0;
    top: 0;
    width: 100%; 
    height: 100%; 
    overflow: auto; 
    background-color: rgb(0,0,0,0.5);  
    padding-top: 30px;
}
.modal-header {
    padding: 2px 16px;
    background-color: #4CAF50,0.5;
    color: white;
    border-radius: 7px 7px 0 0;
    display: flex;
    justify-content: end;
    align-items: center;
}
span {
    border: #4b8051;
    color: white;
    float: right;
    font-size: 28px;
}
.botones {
    display: flex;
    justify-content: space-evenly;
    gap: 10px;
}
button:hover {
    background-color: #45a049;
}   
footer {
    background-color: #4CAF50;
    color: white;
    padding: 15px 0 15px 0;
    text-align: center;
    margin-top: auto;
    width: 100%;
    box-sizing: border-box;
}

h1, h2 {
    margin: 0;
    padding: 10px 0;
}
button {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 10px 15px;
    cursor: pointer;
    border: 1px solid white;
    border-radius: 5px;
}

@media (max-width: 768px) {
    .botones {
        display: flex;
        justify-content: center;
        flex-direction: column;
        gap: 10px;
    }
}