body, html {
    height: 100%;
    margin: 0;
    font-size: 16px;
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    line-height: 1.8em;
    color: #555;

}

.container {
    width: 80%;
    margin: auto;
}

a {
    text-decoration: none;
}

.pimg1, .pimg2, .pimg3, .pimg4 {
    position: relative;
    opacity: 0.75;
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    /* if fixed => parallax effect // if scroll => normal (no effect)*/
    background-attachment: fixed;
}

.pimg1 {
    background-image: url(../images/image1.jpeg);
    min-height: 100%;
}

.pimg2 {
    background-image: url(../images/image3.jpeg);
    min-height: 400px;
}

.pimg3 {
    background-image: url(../images/image2.jpeg);
    min-height: 400px;
}

.pimg4 {
    background-image: url(../images/image4.jpeg);
    min-height: 400px;
}

.section {
    text-align: center;
    padding: 50px 80px/* 50px top/bottom, 80px for left/right*/
}

.section-light {
    background-color: #f4f4f4;
    color: #666;
}

.section-dark {
    background-color: #082746;
    color: #ddd;
}

.ptext {
    position: absolute;
    top: 50%;
    width: 100%;
    text-align: center;
    color: black;
    font-size: 28px;
    letter-spacing: 8px;
    text-transform: uppercase;
}

.ptext .border {
    background-color: #111;
    color: white;
    padding: 20px;
    border-radius: 5px;
}

.ptext .border.trans {
    background-color: transparent;
}

#overlay {
    position: fixed;
    display: none;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0,0,0,0.5);
    z-index: 2;
    cursor: pointer;
}


@media(max-width:568px) {
    body, html {
        font-size: 14px;
        font-family: Verdana, Geneva, Tahoma, sans-serif;
        line-height: 1.5em;
        color: #555;
    overflow: hidden;
        
    }
    .pimg1, .pimg2, .pimg3, .pimg4 {
        background-attachment: fixed;
        /*scroll; /* no parallax effect for mobile devices*/
    }
    .ptext {
        font-size: 16px;
    }
}