.header {
    text-align: center;
    background-color: #333;
    color: #fff;
    padding: 20px 0;
}

.header h1 {
    font-size: 24px;
}
  .about-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
            background-color: #fff;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
            position: relative;
            z-index: 1;
        }

        .about {
            width: 100%;
            float: left;
        }

        .about-description .approach .join-us {
            width: 100%;
            float: left;
            margin-bottom: 30px;
        }

        button {
            padding: 10px 20px;
            font-size: 16px;
            background-color: #4CAF50;
            color: #fff;
            border: none;
            cursor: pointer;
            border-radius: 5px;
            transition: background-color 0.3s;
        }

        button:hover {
            background-color: #45a049;
        }