body {
    margin: 0;
}

h1, h2, p, div {
    text-align: center;
    font-family: 'Helvetica', 'Arial', sans-serif;
}

#videoBox {
    position: relative;
}

#video1 {
    width: 100%;
    z-index: -100;
}

#paragraphVideo {
    position: absolute;
    color: white;
    top: 70%;
    font-size: 30px;
    max-width: 95vw;
    max-height: 25vh;
}

.videoHeader {
    font-family: 'Helvetica', 'Arial', sans-serif;
    font-size: 105px;
    text-align: center;
    position: absolute;
    color: white;
}

#putrHeader {
    margin: 0;
    left: 40%;
}

img {
    max-height: 30vh;
    width: 100%;
}

a {
    margin: 5px;
}

iframe {
    align-self: center;
    width:30%;
    height: 50%;
    margin: 5px;
}

#groupBox {
    display: flex;
    flex-direction: row;
    justify-content: center;
    min-width: 50vw;
}

.card {
    /* Add shadows to create the "card" effect */
    box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2);
    transition: 0.3s;
    margin: 10px;
}

/* On mouse-over, add a deeper shadow */
.card:hover {
    box-shadow: 0 8px 16px 0 rgba(0,0,0,0.2);
}

#imageBox {
    display: flex;
    justify-content: center;
}

#blockDiagram {
    width:auto;
    min-height: 95vh;
}

.documentBox {
    display: flex;
    flex-direction: column;
    justify-content: center;
}