body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #f0f0f0;
}

header {
    position: absolute;
    top: 0;
    text-align: center;
}

.container {
    text-align: center;
    background-color: white;
    padding: 20px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
}

#fileInput,
#convertButton,
#downloadLink {
    display: block;
    margin: 15px auto;
    padding: 15px 0px;
}

#fileInput::file-selector-button {
    background-color: #4CAF50;
    color: white;
    text-decoration: none;

    box-shadow: none;
    border: none;
    font-size: 20px;
    width: 30%;
}

#fileInput,
#convertButton,
#downloadLink {
    background-color: #4CAF50;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    box-shadow: none;
    width: 100%;
    border: none;
    font-size: 20px;
    cursor: pointer;
}

#convertButton:hover,
#downloadLink:hover {
    background-color: #45a049;
}

#downloadLink.disabled {
    cursor: not-allowed;
    background-color: rgb(87, 87, 87);
}

#downloadLink.disabled:hover {
    cursor: not-allowed;
    background-color: grey;
}

footer {
    position: absolute;
    width: 100%;
    bottom: 0;
    background-color: #333;
    color: white;
    text-align: center;
    padding: 10px 0;
    font-size: 14px;
}

footer a {
    color: #fff;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}