body {
    background-color: #00ffff
}

h1 {
    font-family: "arial";
    font-size: 30px;
    color: red;
    text-decoration: underline;
    text-align: center
}

    h1.left {
        text-align: left
    }

h2 {
    font-family: "arial";
    font-size: 25px;
    color: blue;
    text-decoration: underline
}

h2.centre {
    font-family: "arial";
    font-size: 25px;
    color: green ;
    text-decoration: underline;
    text-align: center
}

h3 {
    font-family: "arial";
    font-size: 17px;
    color: red;
    text-decoration: underline
}

p {
    font-family: "arial";
    font-size: 18px
}

    p.centre {
        font-family: "arial";
        font-size: 20px;
        text-decoration: bold;
        text-align: center
    }

    p.warning {
        font-family: "arial";
        font-size: 27px;
        color: red;
        text-decoration: underline
    }

ul {
    font-family: "arial";
    font-size: 18px
}

ol {
    font-family: "arial";
    font-size: 18px
}

a {
    line-height: 100%;
    font-family: "arial";
    font-weight: bold;
    font-size: 20px;
    text-decoration: none;
    text-align: center
}

    a:hover {
        text-decoration: underline
    }

    a.centre {
        line-height: 100%;
        font-family: "arial";
        font-weight: bold;
        font-size: 20px;
        text-align: center
    }

table.centre {
    line-height: 100%;
    font-family: "arial";
    font-weight: bold;
    font-size: 20px;
    text-align: center
}

a.hide {
    color: #00ffff
}

table.centred {
    margin: 0px 50px 0px 50px
}

td {
    vertical-align: top
}

th {
    text-align: left
}

td.left {
    text-align: left
}

td.right {
    text-align: right
}

td.centre {
    text-align: center;
    font-family: "arial";
    font-size: 18px;
    font-weight: bold
}

span.a {
    color: #0000ff;
    line-height: 100%;
    font-family: "arial";
    font-weight: bold;
    font-size: 20px;
    text-decoration: none;
    cursor: pointer
}

iframe.clNVFrame {
    position: block;
    border: ridge;
    width: 88.5vw;
    height: 92vh;
}

img.centre {
    display: block;
    margin-left: auto;
    margin-right: auto;
}
#hintbox { /*CSS for pop up hint box */
    position: absolute;
    top: 0;
    background-color: lightyellow;
    width: 150px; /*Default width of hint.*/
    padding: 3px;
    border: 1px solid black;
    font: normal 11px Verdana;
    line-height: 18px;
    z-index: 100;
    border-right: 3px solid black;
    border-bottom: 3px solid black;
    visibility: hidden;
}

.hintanchor { /*CSS for link that shows hint onmouseover*/
    font-weight: bold;
    color: navy;
    margin: 3px 8px;
}