body {
    margin: 0;
    padding: 0;
}

.bg-wrap {
    position: relative;
    width: 100%;
    min-height: 100vh;
background: url("../images/knife.jpg")center/cover;
    color: #FFFFFF;
}

.bg-wrap p{
    margin: 0;
    position: absolute;
    top:calc(50% - 0.5em);
    width: 100%;
    text-align: center;
}