.firstdiv{
    background-color: rgb(77, 78, 82);
    font-size:30px;
    font-family: Arial, Helvetica, sans-serif;
    width: auto;
    height: 45px;
    font-weight: bolder;
    color: white;
    text-align: left;
    line-height: 150%;
}

.seconddiv{
    background-color: rgb(29, 29, 31);
    font-size:25px;
    font-family: 'Times New Roman';
    width: auto;
    height: 60px;
    font-weight: bolder;
    color: white;
    text-align: left;
}

.table1{
    padding: 10px;
    width: 100%;
}

.thirddiv{
    margin-top: 50px;
    margin-left:50px;
}


.juzhongtu{
    text-align: center;
    margin-top: 50px;
}

.imgpeople{
    text-align: center;
    width: 500px;
    height: 600px;
}

button{
    width: 300px;
    height: 50px;
    font-size:25px;
    border: white;
    background: white;
    color:rgb(114, 111, 111);
    font-family: 'Times New Roman', Times, serif;
}
button:hover,button:active{
    color: black;
    background-color:rgb(224, 214, 214);
}


.a1{
    text-decoration : none;
    color: white;
}

.bottomtip{
    margin-top: auto;
    text-align: right;
    margin-right: 50px;
    margin-bottom: 20px;
}