.hero {
    background: url('images/security.jpg') center/cover no-repeat;
    padding: 120px 0;
}

    .hero h1 {
        font-weight: bold;
        font-size: 3rem;
    }

    .hero p {
        font-size: 1.2rem;
    }

.map-responsive {
    overflow: hidden;
    padding-bottom: 56.25%;
    position: relative;
    height: 0;
}

    .map-responsive iframe {
        left: 0;
        top: 0;
        height: 100%;
        width: 100%;
        position: absolute;
    }