styles.css

body {
    color: #d7dde8;

    /** box-shadow: inset 0 0 20em 0.5em #000; **/

    background-color: #313742;
    background-image:
        repeating-linear-gradient(120deg, rgba(255,255,255,.1), rgba(255,255,255,.1) 1px, transparent 1px, transparent 60px),
        repeating-linear-gradient(60deg, rgba(255,255,255,.1), rgba(255,255,255,.1) 1px, transparent 1px, transparent 60px),
        linear-gradient(60deg, rgba(0,0,0,.1) 25%, transparent 25%, transparent 75%, rgba(0,0,0,.1) 75%, rgba(0,0,0,.1)),
        linear-gradient(120deg, rgba(0,0,0,.1) 25%, transparent 25%, transparent 75%, rgba(0,0,0,.1) 75%, rgba(0,0,0,.1));
    background-size: 70px 120px;
}

body:after {
  content: '';
  position: absolute;
  top: 0; left: 0; bottom: 0; right: 0;
  background: radial-gradient(circle, transparent 30%, black 150%);
  z-index: 1;
}

a, a:hover {
    color: #d7dde8;
    text-decoration: none;
}

h1 {
    font-size: 5rem;
    font-family: 'Abril Fatface', cursive;
}

h2 {
    margin: 0;
    font-weight: normal;
}

/** From https://ctrlq.org/code/19764-black-white-image-colored **/
img {
    filter: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg'><filter id='grayscale'><feColorMatrix type='matrix' values='0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0 0 0 1 0'/></filter></svg>#grayscale");
    /* Firefox 10+, Firefox on Android */
    -webkit-filter: grayscale(100%);
    filter: grayscale(100%);
    filter: gray;
    /* IE 6-9 */
    -moz-transition: all 0.5s ease-in;
    -o-transition: all 0.5s ease-in;
    -webkit-transition: all 0.5s ease-in;
    transition: all 0.5s ease-in;

    box-shadow: 0 10px 20px rgba(0,0,0,.19), 0 6px 6px rgba(0,0,0,.23);
}

img:hover, img:active {
  filter: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg'><filter id='grayscale'><feColorMatrix type='matrix' values='1 0 0 0 0, 0 1 0 0 0, 0 0 1 0 0, 0 0 0 1 0'/></filter></svg>#grayscale");
  -webkit-filter: none;
  filter: none;
  transform: scale(1.02);

  box-shadow: 0 19px 38px rgba(0,0,0,.3), 0 15px 12px rgba(0,0,0,.22);
}

main {
    display: none;
    z-index: 2;
}

section {
    padding: 0 3rem;
    background-position: center;
    background-size: cover;
}

section.has-slides {
    text-align: center;
}

section .fp-slide img {
    max-width: 85%;
    max-height: 85%;
}

.fp-controlArrow {
    opacity: 0.5;
}
.fp-controlArrow:hover {
    opacity: 1;
}

#fp-nav.right {
    bottom: 15px;
    right: 10px;
    top: auto;
}

#fp-nav ul li a span, .fp-slidesNav ul li a span {
    background-color: #FFF;
}

section .content {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    padding: 20px;
    z-index: 3;
    background-color: rgba(0,0,0,0.3);
}

section.intro {
    /** background-color: #313742; **/
    /**
    background-color: #111515;
    background-image: linear-gradient(160deg, #111515 0%, #5c8e88 100%);
    **/
}

section.intro h1 {

}

section.intro img {
    max-width: 100%;
    max-height: 100%;
}

section.intro ul {
    opacity: 0.7;
    list-style: none;
    padding: 0;
}

section.intro strong {
    opacity: 1;
    color: #FFF;
}

section.birth {
    /** background-color: #1e2127; **/

    /**
    background-color: #730e32;
    background-image: linear-gradient(19deg, #730e32 0%, #1e2127 75%);
    **/
}

section.release {
    background-image: url(photos/release.jpg);
}

section.release .content {
    bottom: 0;
    top: auto;
}

section.kids {
    /**
    background-color: #1f1c2c;
    background-image: linear-gradient(0deg, #1f1c2c 0%, #928dab 100%);
    **/
}

section.kids .row {
    max-height: 80vh;
    overflow: hidden;
    margin: 0;
}

section.kids .row div {
    overflow-x: hidden;
    margin: 5px;
    transition: all 0.5s ease-in;
}

section.kids .row div:hover {
    transform: scale(1.02);
}

section.kids .row img {
    height: 100%;
    margin-left: 50%;
    transform: translateX(-50%);
}

section.bethany {
    background-image: url(photos/bethany1.jpg);
}

section.baptism {
    background-image: url(photos/baptism.jpg);
}

section.together {
    background-image: url(photos/together.jpg);
}

section.adoption {
    text-align: center;
}

section.adoption img {
    max-height: 60vh;
    max-width: 100%;
}

section.adoption .row img {
    max-height: 30vh;
}


/** From https://codepen.io/anon/pen/mqeGVj **/
.arrows {
  position: relative;
  /**/
  width: 15px;
  height: 15px;
  display: inline-block;
}
.arrows:before {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  border-left: 5px solid rgba(255, 255, 255, 0.7);
  border-bottom: 5px solid rgba(255, 255, 255, 0.7);
  transform: translate(5px, 20px) rotate(-45deg);
  animation: arrows 5s linear infinite;
}
.arrows:after {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  border-left: 5px solid rgba(255, 255, 255, 0.7);
  border-bottom: 5px solid rgba(255, 255, 255, 0.7);
  transform: translate(10px, 0px) rotate(-45deg);
  animation: arrows 5s linear infinite -2.5s;
}

@keyframes arrows {
  0% {
    border-left: 5px solid rgba(255, 255, 255, 0);
    border-bottom: 5px solid rgba(255, 255, 255, 0);
    transform: translate(-2.5px, -10px) rotate(-45deg);
  }
  10%, 90% {
    border-left: 5px solid rgba(255, 255, 255, 0);
    border-bottom: 5px solid rgba(255, 255, 255, 0);
  }
  50% {
    border-left: 5px solid rgba(255, 255, 255, 0.7);
    border-bottom: 5px solid rgba(255, 255, 255, 0.7);
    transform: translate(-2.5px, 0px) rotate(-45deg);
  }
  100% {
    border-left: 5px solid rgba(255, 255, 255, 0);
    border-bottom: 5px solid rgba(255, 255, 255, 0);
    transform: translate(-2.5px, 10px) rotate(-45deg);
  }
}

@media (max-width: 768px) {
    h1 {
        font-size: 3rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .lead {
        font-size: 1rem;
    }
}

@media (max-width: 576px) {
    section.kids .row img, section.adoption img, section.adoption .row img {
        max-height: 18vh;
    }
}