body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f8f9fa;
    color: #333;
}

header {
    background: #1e3d59;
    color: white;
    text-align: center;
    padding: 20px;
}

header h1 {
    margin: 0;
}

main {
    padding: 20px;
    max-width: 900px;
    margin: auto;
}

.steps {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 15px rgba(0,0,0,0.1);
}

.step {
    margin-bottom: 15px;
}

.step-title {
    width: 100%;
    padding: 10px;
    background: #1e88e5;
    border: none;
    color: white;
    font-size: 16px;
    cursor: pointer;
    text-align: left;
    border-radius: 5px;
    transition: background 0.3s;
}

.step-title:hover {
    background: #1565c0;
}

.step-content {
    display: none;
    padding: 10px;
    background: #f4f4f4;
    border-left: 3px solid #1e88e5;
    margin-top: 5px;
    border-radius: 5px;
}

pre {
    background: #272822;
    color: #f8f8f2;
    padding: 10px;
    border-radius: 5px;
    overflow-x: auto;
}

footer {
    text-align: center;
    padding: 15px;
    background: #1e3d59;
    color: white;
    margin-top: 30px;
}