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

header, .container {
    display: flex;
    align-items: center;
}

header {
    background-color: #00004f;
    color: #fff;
    padding: 20px 0;
    text-align: center;
}

header .container {
    justify-content: center;
}

header img#logo {
    max-width: 350px;
    margin-right: 20px;
}

section {
    padding: 40px 20px;
}

.feature-image, .app-screenshot {
    max-width: 40%;
    margin-right: 20px;
}

footer {
    background-color: #00004f;
    color: #fff;
    text-align: center;
    padding: 10px 0;
}