style.css

body, html{
        height: 100%;
        margin: 0%;
        font-size: 16px;
        font-family: 'Lato', sans-serif;
        font-weight: 400;
        line-height: 1.8cm;
        color: #666;
    }

    .pimg1, .pimg2, .pimg3, .pimg4{
        position: relative;
        opacity: 0.70;
        background-position: center;
        background-size: cover;
        background-repeat: no-repeat ;
        background-attachment: fixed;
    }

    section{
        text-align: center;
        padding: 50px 80px;
    }

    .section-light{

        background: whitesmoke;
        color: #666;
    }

    .section-dark{
background: grey;
color: #dddddd;
    }


    .ptext{

        position: absolute;
        text-transform: uppercase;
        text-align: center;
        color: #000000;
        top: 50%;
        width: 100%;
        letter-spacing: 8px;
        font-size: 27px;
    }
    .ptext .border{
        background: #111111;
        color: #ffffff;
        padding;: 20px;
    }

    .pimg1{
        background-image: url(1.jpeg);
        min-height: 100%;
    }

    .pimg2{
        background-image: url(4.jpeg);
        min-height: 400px;
    }

    .pimg3{
        background-image: url(3.jpeg);
        min-height: 400px;
    }

    .pimg4{
        background-image: url(4.png);
        min-height: 400px;
    }