body
{
    margin: 0;
    padding: 0;
    font-family: sans-serif;
    background: #000;
}

.container
{
    width: 100%;
    height: 100vh;
    overflow: hidden;
}

.container .column 
{
    width: 25%;
    height: 100%;
    float: left;
    border-right: 2px solid rgba(0, 0, 0, .5);
    box-sizing: border-box;
    z-index: 1;
}

.container .column:last-child
{
    border-right: none;
}

.container .column .content
{
    position: relative;
    height: 100%;
}

.container .column .content h1
{
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    background: rgba(0, 0, 0, .1);
    text-align: center;
    margin: 0;
    padding: 0;
    color: rgba(225, 225, 225, .1);
    font-size: 15em;
    border-top: 2px solid rgba(0, 0, 0, .5);
    border-bottom: 2px solid rgba(0, 0, 0, .5);
}

.container .column .content .lorembox
{
    position: absolute;
    top: 50%;
    transform: translateY(100%);
    box-sizing: border-box;
    padding: 40px;
    background: #fff;
    text-align: center;
    transition: .25s;
    opacity: 0;
    z-index: 1;
}

.container .column.active .content .lorembox
{
    opacity: 1;
    transform: translateY(-50%);
}

.container .column .content .lorembox h2
{
    margin: 0;
    padding: 0;
    font-size: 30px;
    color: #262626;
}

.container .column .content .lorembox p 
{
    font-size: 18px;
    color: #262626;

}

.container .column .bg
{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

.container .column.active .lorembox
{
    z-index: 2;
}

.container .column.active .bg.bg1
{
    background: url('../images/biker.jpeg');
    background-size: cover;
    background-attachment: fixed;
    background-position: center;
    transition: .5s;
}

.container .column.active .bg.bg2
{
    background: url('../images/calm.jpeg');
    background-size: cover;
    background-attachment: fixed;
    background-position: center;
    transition: .5s;
}

.container .column.active .bg.bg3
{
    background: url('../images/laptop.jpeg');
    background-size: cover;
    background-attachment: fixed;
    background-position: center;
    transition: .5s;
}

.container .column.active .bg.bg4
{
    background: url('../images/star_exposure.jpeg');
    background-size: cover;
    background-attachment: fixed;
    background-position: center;
    transition: .5s;
}