.slider h3,
.slider h5,
.clients h3 {
    text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
}

.parallax-container {
    height: 22%;
}

.parallax img {
    filter: grayscale(1);
    opacity: 0.5 !important;
}

.clients img {
    max-width: 200px;
    filter: drop-shadow(1px 1px 1px rgba(0,0,0,0.5));
    padding-top: 20px;
}

section, footer {
    padding: 20px 0;
}

.navbar-fixed ul {
    font-family: Helvetica, Helvetica, sans-serif;
}