.diamondswrap {z-index: 0; width:100%; min-height: 520px; display: table;}
.diamonds {
    //text-align: center;
    overflow: hidden;
    white-space: nowrap;
    display: table-cell;
    margin: 0 auto;
}

.diamond-row-wrap {
    text-align: center;
    position: relative;
    float: left;
    clear: both;
}
.diamond-row-upper, .diamond-row-lower {
    overflow: visible;
    clear: both;
    width: 100%;
}
.diamond-row-lower {
    position: absolute;
    bottom: 0;
}
.diamond-row-lower .diamond-box {
    margin-left: 64%; /* 1 - 1 / sqrt(2) / 2 */
    margin-top: 64%;
}

.diamond-box-wrap {
    float: left;
    width: 250px; /* Size of diamonds */
    height: 250px;
}

.diamond-box {
    -webkit-transform: rotate(45deg);
    -moz-transform: rotate(45deg);
    -ms-transform: rotate(45deg);
    transform: rotate(45deg);

    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    -ms-box-sizing: border-box;
    box-sizing: border-box;

    overflow: hidden;

    position: relative;
    z-index: 1;

    width: 70%; /* x = sqrt(x^2 / 2) = 1 / sqrt(2) = 0.70710678118 */
    height: 70%;
    margin: 14%;

    border: 1px solid transparent;
}

.diamond-box-inner {
    -webkit-transform: rotate(-45deg);
    -moz-transform: rotate(-45deg);
    -ms-transform: rotate(-45deg);
    transform: rotate(-45deg);

    -webkit-transform-origin: center center;
    -moz-transform-origin: center center;
    -ms-transform-origin: center center;
    transform-origin: center center;

    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    -ms-box-sizing: border-box;
    box-sizing: border-box;

    width: 141%; /* sqrt(2) */
    height: 141%;
    margin: -20% 0 0 -20%; /* (1 - sqrt(2)) / 2 */
}

.diamond-box-inner .item {
    display: block;
    position: relative;
    width: 100%;
    height: 100%;
    padding: 40% 0;
    background-color: #ffffff;
    color: white;
    background-position: center center;
    background-size: contain;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    -ms-box-sizing: border-box;
    box-sizing: border-box;
}