.intro-section {
    background: url("../images/dapp_bg.jpg") no-repeat;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center center;
    position: relative;
}

.intro-section .overlay{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 13, 38, 0.85);
}

.intro-wrapper{
    position: relative;
    z-index: 1;
}