header {
    height: 100vh;
    position: relative;
    min-height: 600px;
}
.header-slide {
    height: 100%;
    position: absolute;
    width: 100%;
}
.header-slide span.bg-image {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 100%;
    padding-top: 0;
}
.header-slide span.bg-image.dsktp {display: none;visibility: hidden;}
.header-slide .constrainedContent {
    height: 100%;
    padding-top: 400px;
}
.txt-box {
    color: #fff;
    position: relative;
    text-shadow: 0px 0px 10px #000000;
}
.txt-box p {
    font-size: 1.4rem;
    font-weight: 600;
    text-transform: uppercase;
    color: #cccccc;
    margin-bottom: 14px;
}
.txt-box p span {
    color: #fff;
}
.txt-box h1,
.txt-box h2 {
    line-height: 100%;
    font-size: 3.5rem;
    font-weight: 400;
}
.txt-box h1 span,
.txt-box h2 span {
    text-transform: uppercase;
    font-family: LibreFranklin, Arial, Sans-Serif;
    font-weight: 900;
}

@media only screen and (min-width: 450px) {
    .txt-box h1,
    .txt-box h2 {
        font-size: 6rem;
    }
    .header-slide .constrainedContent {
        /*padding-top: 70%;*/
    }
}
@media only screen and (min-width: 600px) {
    .header-slide span.bg-image.mobile {
        margin-top: -12%;
    }
}
@media only screen and (min-width: 650px) {
    .txt-box h1,
    .txt-box h2 {
        font-size: 8rem;
    }
}
@media only screen and (min-width: 750px) {
    .txt-box p {
        margin-bottom: 20px;
    }
}
@media only screen and (min-width: 800px) {
    .txt-box {
        position: absolute;
        margin-top: 0;
        top: 50%;
        -webkit-transform: translateY(-50%);
        -ms-transform: translateY(-50%);
        transform: translateY(-50%);
    }
    .header-slide span.bg-image.dsktp {
        display: block;
        visibility: visible;
    }

    .header-slide span.bg-image.mobile {
        display: none;
        visibility: hidden;
    }
}