.sec-intro:after, .pb_slant-white:after {
    content: "";
    position: absolute;
    bottom: -150px;
    left: -50px;
    height: 250px;
    width: 130%;
    background-color: #fff;
    -webkit-transform: rotate(-3deg);
    -ms-transform: rotate(-3deg);
    transform: rotate(-3deg);
    z-index: 10;
}

.sec-about { background-color: #fff; }
.sec-about .container { position: relative; z-index: 30; max-width: 100%; }