body {
    font-family: Arial;
    font-size: 12px;
    background-color: #ffff99;

}

.centre {
    text-align: center;
}

#center {
    display: block;
    margin: auto;
    border: 2px solid #000000;
}

.red {
    color: rgb(255, 0, 0);
    text-align: center;
    font-family: Verdana;
}

#green {
    color: darkgreen;
    font-family: Verdana;
}

#blue {
    color: blue;
    font-family: Verdana;
}

#yellow {
    color: yellow;
    font-family: Verdana;
}

p {
    color: rgb(0, 0, 0);
}

.line {
    width: 50%;
    margin-left: 0;
    margin-right: auto;
}

.space {
    margin-left: 20px;
}

.bg_green {
    background-color: green;
    display: block;
}

.spec {
    background-color: red;
    font-size: 16px;
    font-weight: bold;
}

.code {
    font-family: "Courier New", Courier;
}

a {
    color: #666666;
    font-size: 16px;
    text-decoration: none;
}

a:hover {
    text-decoration: underline overline;
}