.parallax, .parallax-sh, .parallax-av, .parallax-tl, .parallax-op
{
    position: relative;
    background-attachment: fixed;
    background-position-x: center;
    background-repeat: no-repeat;
    background-size: cover;
}
.parallax-sh
{
    min-height: 400px;
}
.parallax-av
{
    min-height: 800px;
}
.parallax-tl
{
    min-height: 1000px;
}
.parallax-op
{
    opacity: 65%;
}

.p-opacity
{
    opacity:70%;
}

.p-btn-opacity
{
    opacity:95%;
}

.b-button
{
    opacity:95%;
    height:110%;
    font-size: 40px;
    border-radius: 200px;
    text-align: center;
}