* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
 
body {
    font-family: Arial, sans-serif;
    background: linear-gradient(135deg, #000000 0%, #292929 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}
 
.container {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    text-align: center;
    width: 800px;
}
 
h1 {
    color: #333;
    margin-bottom: 30px;
    font-size: 24px;
}
 
#toggleBtn {
    background-color: #5e5e5e;
    color: white;
    border: none;
    padding: 15px 30px;
    font-size: 16px;
    border-radius: 5px;
    cursor: pointer;
    margin-bottom: 30px;
    transition: background-color 0.3s ease;
    width: 600px;
}
 
#toggleBtn:hover {
    background-color: #000000;
}
 
#box {
    background-color: #f0f0f0;
    padding: 30px;
    border-radius: 5px;
    color: #333;
    font-size: 18px;
    display: none;
    max-width: 800px;
    align-items: center;
}
 
.container {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    text-align: center;
    width: 800px;
}
 
h1 {
    color: #333;
    margin-bottom: 30px;
    font-size: 24px;
}
 
#toggleBtn2 {
    background-color: #5e5e5e;
    color: white;
    border: none;
    padding: 15px 30px;
    font-size: 16px;
    border-radius: 5px;
    cursor: pointer;
    margin-bottom: 30px;
    transition: background-color 0.3s ease;
    width: 600px;
}
 
#toggleBtn2:hover {
    background-color: #000000;
}
 
#box2 {
    background-color: #f0f0f0;
    padding: 30px;
    border-radius: 5px;
    color: #333;
    font-size: 18px;
    display: none;
    max-width: 800px;
    align-items: center;
}
 


.container {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    text-align: center;
    width: 800px;
}
 
h1 {
    color: #333;
    margin-bottom: 30px;
    font-size: 24px;
}
 
#toggleBtn3 {
    background-color: #5e5e5e;
    color: white;
    border: none;
    padding: 15px 30px;
    font-size: 16px;
    border-radius: 5px;
    cursor: pointer;
    margin-bottom: 30px;
    transition: background-color 0.3s ease;
    width: 600px;
}
 
#toggleBtn3:hover {
    background-color: #000000;
}
 
#box3 {
    background-color: #f0f0f0;
    padding: 30px;
    border-radius: 5px;
    color: #333;
    font-size: 18px;
    display: none;
    max-width: 800px;
    align-items: center;
}