body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background-color: #ffffff;
    text-align: center;
    margin-top: 70px; 
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 80px; 
    background-color: #ffffff;
    display: flex;
    align-items: center;
    padding-left: 20px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.header img {
    height: 60px; 
    object-fit: contain;
}


.container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: calc(100vh - 100px);
    padding: 20px;
    box-sizing: border-box;
}

.container h1 {
    font-size: 3rem; 
    margin-bottom: 20px;
    color: #333;
}

.container p {
    font-size: 1.5rem; 
    margin-bottom: 30px;
    color: #555;
}

button.btn, a.btn {
    display: inline-block;
    background-color: #008000;
    color: white;
    text-decoration: none;
    padding: 15px 30px; 
    font-size: 1.5rem; 
    border-radius: 6px; 
    margin: 15px;
    width: 300px; 
    text-align: center;
}

a.btn:hover {
    background-color: #008000;
}

button.btn:hover, a.btn:hover {
    background-color: #008000;
}

button[type="submit"] {
    background-color: #008000; 
}

button[type="submit"]:hover {
    background-color: #218838; 
}

input[type="file"] {
    font-size: 1.2rem; 
    margin: 20px 0; 
}

.checkbox-container {
    text-align: left;
    margin-bottom: 15px;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
}

.checkbox-container input[type="checkbox"] {
    width: 25px;
    height: 25px;
    margin-right: 15px;
    transform: scale(1.5); 
}

.checkbox-container label {
    font-size: 1.2rem;
    cursor: pointer;
}