.mytitle{
    font-size: 35px;
    color: black;
    padding-top: 30px;
}
.GridLabel{
    width: 33%;
    text-align: center;
    font-size: 18px;
    padding: 5px;
}
.HeadLeft{
    width: 20%;
    text-align: left;
 }
.HeadRight{
    width: 20%;
    text-align: right;
}
.HeadCenter{
    width: 60%;
    font-size: 12px;
    text-align: center;
    padding: 0%;
}
.myStart{
    background: url("../images/exambg.jpg");
    background-repeat: no-repeat;
    background-size: 100% 100%;
}

.myNav{
    text-align: center;
    width: 25%;
    font-size: 12px;
 }
.myNavSelect{
    text-align: center;
    width: 25%;
    color: blue;
    font-size: 12px;
}
.myNavHeader{
    text-align: center;
    font-size: 25px;
    text-align: center;
    padding: 5px;
    background-color:#fddb93;
}

.myQuesSelect{
    text-align: center;
    width: 20%;
    font-size: 12px;
    color: blue;
}
.myQues{
    text-align: center;
    width: 20%;
    font-size:12px;
}
.myQuesHeader{
    font-size: 25px;
    text-align: center;
    background-color: #fddb93;
    /*background-color: #4DC3F3;*/
}
.myAnswerList{
    width: 10%;
    text-align: center;
    font-size: 18px;
    padding: 0px;
}
.myTableHead{
    font-size: 15px;
    text-align: center;
    padding: 0px;
}
.SuggestionTextarea{
    width: 100%;
    height: 100px;
    min-height: 100px;
    max-height: 100px;
}

.vid-wrap{
    width:100%;background: #000;
    position:relative;
    padding-bottom:56.25%;    /*需要用padding来维持16:9比例,也就是9除以16*/
    height: 0;
}
.vid-wrap video{
    position: absolute;
    top:0;
    left: 0;
    width: 100%;
    height: 100%
}