html, body
{
    margin: 0;
    padding: 0;
    height: 100%;
    width: 100%;
}

.truechar
{
    font-family: "宋体"; /*font-weight: normal;*/
    color: #000000;
    background-color: #00CD00;
}
.falsechar
{
    font-family: "宋体"; /*font-weight: normal;*/
    color: #000000;
    background-color: #FF0000;
}
.usualchar
{
    font-family: "宋体"; /*font-weight: normal;*/
    color: #000000;
}
.bg
{
    display: block;
    position: absolute;
    top: 0%;
    left: 0%;
    width: 100%;
    background-color: black;
    height: 100%;
    z-index: 1001;
    -moz-opacity: 0.5;
    opacity: .50;
    filter: alpha(opacity=50);
    overflow-y: auto;
    overflow-x: hidden;
}

#show
{
    display: none;
    position: absolute;
    top: 27%;
    left: 26%;
    z-index: 1009;
    overflow-y: auto;
    background-image: url(../images/cj.png);
    width: 694px;
    height: 198px;
    overflow-x: hidden;
    text-align: center;
}