.pair {
    background: #f8f8f8;
}

.heading-icon {
    margin-right: 16px
}

.box-container {
    display: inline-block;
    margin: 0;
    padding: 0;
    margin-top: 1.4em;
    width: 100%;
}

.box {
    list-style-type: none;
    float: left;
    /* opacity: 0; */
    transform: translate3d(0, 40px, 0);
    transition: opacity 0.2s, transform 0.35s;
}

.box.show {
    opacity: 1;
    transform: translate3d(0, 0, 0);
    transition: opacity 0.4s, transform 0.35s;
}

.box .inner {
    padding: 10px;
    position: relative;
}

.box a {
    display: block;
    width: 100%;
    height: auto;
    position: relative;
    overflow: hidden;
}

.box img {
    width: calc(100% + 50px);
    max-width: calc(100% + 50px);
    transition: opacity 0.35s, transform 0.35s;
    transform: translate3d(-40px, 0, 0);
}

.box a::before {
    content: '';
    display: block;
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    background: #000;
    z-index: 99;
    opacity: 0;
    transition: opacity 0.4s;
}

.three-cols .box {
    width: 100%;
}

.four-cols .box {
    width: 23.1%;
}

.four-cols .box:nth-child(4n+0) {
    margin-right: 0;
}

.four-cols .box:nth-child(4n+1) {
    clear: both;
    margin-left: 0;
}

@media (min-width: 1200px) {
    .container {
        /*max-width: 1040px;*/
    }
}

@media (min-width: 390px) {
    .three-cols .box {
        width: 50%;
    }
}

@media (min-width: 576px) {
    .intro h1 {
        font-size: 4.3em;
    }

    .intro {
        max-height: 70vh;
        min-height: 640px;
        padding-top: 0px;
    }

    .intro h1,
    .tagline {
        text-align: left;
    }

    .tagline {
        font-size: 100%;
    }

    .three-cols .box {
        width: 33.3%;
    }

    .three-cols .box:nth-child(3n+0) {
        margin-right: 0;
    }

    .three-cols .box:nth-child(3n+1) {
        margin-left: 0;
    }

    .mcbutton {
        width: auto;
    }
}
@media (min-width: 992px) {
    .box:hover img {
        transform: translate3d(0, 0, 0);
        transition: opacity 0.35s, transform 0.35s;
    }

    .box:hover a::before {
        opacity: 0.3;
        transition: opacity 0.5s;
    }
}