body{
    font-family:Calibri;
    font-size:14px;

#mo {
    font-family: 'Calibri';
    font-size: 14px;
    color: white;
    background-color:darkgreen;
    margin-left:150px;
}
#dong, #lui, #toi {
    font-family: 'Calibri';
    font-size: 14px;
    color: white;
    background-color: darkgreen;
    margin-left: 20px;
}
#motx {
    position: absolute;
    left: 300px;
    top: 90px;
    display: none;
}

#haix {
    font-size: 14px;
    text-align: justify;
    position: absolute;
    top: 55px;
    left: 10px;
    width: 530px;
    height: 610px;
    border: solid 4px #808080;
    background-color: #f3f3f3;
    display: none;
}

    #bax {
        font-size: 14px;
        text-align: justify;
        position: absolute;
        left: 544px;
        top: 55px;
        width: 530px;
        height: 610px;
        border: solid 4px #808080;
        background-color: #f3f3f3;
        display: none;
    }



#Text1 {
    width: 50px;
    height: 14px;
    margin-left: 40px;
}

#vidone {
    margin-top: 100px;
    margin-left: 50px;
    width: 400px;
    height: 310px;
}

h1, h2 {
    font-family: Tahoma;
    color: blue;
    font-weight: bolder;
    text-align: center;
}

h3 {
    color: #4c4ce4;
    font-family: Tahoma;
    font-weight: bolder;
    text-align: center;
}

#sangtac, #chidan {
    font-family: Tahoma;
    font-size: 14px;
    text-align: center;
    font-weight: bolder;
}

#gh {
    font-size: 16px;
    color: blue;
}
#big{
    margin-top:200px;
    text-align:center;
    color:blue;
    font-family:Tahoma;
    font-size:60px;
    font-weight:bolder;
}

#mal {
    text-align: center;
    color: blue;
    font-family: Tahoma;
    font-size: 18px;
    font-weight: bolder;
    font-style:italic;
}