* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Roboto, Arial, sans-serif;
    font-size: 16px;
    height: 2000px;
}

.header {
    height: 100vh;
    background-color: #333;
    background-image: url(img/4.jpg);
    background-size: cover;
    background-repeat: no-repeat;
    background-attachment: fixed;
    position: relative;
    z-index: 1;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    z-index: -1;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background-color: rgba(53, 62, 74, 0.8);
}

.header-content {
    position: absolute;
    width: 100%;
    max-width: 768px;
    padding: 15px;
    text-align: center;
    left: 50%;
    top: 50%;
    -webkit-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    color: #FFF;
}

.header-content p {
    font-size: 1.2em;
    font-weight: 300;
    line-height: 1.5;
}

.header-logo {
    font-size: 3.5em;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 20px;
}

.header-cta {
    display: inline-block;
    text-decoration: none;
    height: 60px;
    line-height: 60px;
    min-width: 220px;
    padding: 0 15px;
    margin-top: 20px;
    text-align: center;
    font-size: 1.1em;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #FFF;
    border: 2px solid #FFF;
    transition: background-color .2s ease, color .2s ease;
}

.header-cta:hover {
    background-color: #fff;
    color: #000;
}

/* Next Button */

* {
    box-sizing: border-box;
}

.icon {
    display: block;
    width: 1.5em;
    height: 1.5em;
    margin: 0 auto;
    fill: currentColor;
}

.icon--arrow-right {
    transform: scale3d(-1, -1, 1);
    display: inline-block;
    vertical-align: middle;
    margin-left: 0.5em;
}

.next {
    position: absolute;
    display: flex;
    justify-content: flex-end;
    bottom: 0;
    right: 0;
    z-index: 999;
}

.next-demo {
    position: relative;
    margin: 1.5em 2em;
    font-weight: bold;
    color: #fff !important;
    text-decoration: none;
}

.next-demo a:hover, .next-demo a:focus {
    color: #42AB9E !important;
}

.hidden {
    width: 0;
    height: 0;
}