body{
    background-color: white;
    width: 1920px;
}

.RD_TitleHead{
    background-color: black;
}

.RD_TitleHead_img{
    width: 296px;
    height: 80px;
    position: relative;
    left: 300px;
}

/*����������*/
ul{
    position: relative;
    list-style-type:none;
    line-height: 36px;
    background-color: black;
    text-align: center;
    margin-left: 1px;
    left: 400px;
}

/*����������*/
li{
    display: inline;
    line-height: 40px;
    float: left;
}

/*����������*/
a{
    text-decoration: none;
    color:white;
    font-size: 18px;
    margin: 0;
    padding: 9px 40px;
    word-spacing: 4px;
}

/*����������*/
a:hover{
    background-color: blue;
}

/*����������*/
a:visited{
    background-color: red;
}

/*��������������Tr*/
.RD_Content_tr{
    height: 720px;
}

/*�������� ������*/
.RD_Content_Area{
    margin-top: 50px;
    margin-bottom: 360px;
    position: relative;
}

/* ���td*/
.RD_Content_Left_td{
    /*background-color: blue;*/
    width: 20%;
    height: 360px;
    position: relative;
   
}

/* �м�td*/
.RD_Content_Middle_td{
    /*background-color: bisque;*/
    height: 600px;
    width: 60%;
}

/* ����������ؼ����� */
.RD_Content_Left_Row1{
    position: relative;
    margin-left: 20%;
    margin-top: 20px;
}

.RD_Content_Left_Row2{
    position: relative;
    margin-left: 20%;
    margin-top: 40px;
}

.RD_Content_Left_Row3{
    position: relative;
    margin-left: 20%;
    margin-top: 40px;
}

.RD_Content_Left_Row4{
    position: relative;
    margin-left: 20%;
    margin-top: 40px;
}

/* Button�ؼ�*/
.RD_CL_Row1_Bt{
    background-color: bisque;
    border: 2px solid  blue;
    border-radius: 8px;
    font-size: 18px;
    padding: 30px 20px;
    margin: 4px 2px;
    text-align: center;
    -webkit-transition-duration: 0.4s;
    transition-duration: 0.4s;;
    overflow: hidden;
    cursor: pointer;
    position: relative;
}

.RD_CL_Row2_Bt{
    position: relative;
    background-color: bisque;
    border: 2px solid blue;
    border-radius: 8px;
    font-size: 18px;
    padding: 10px 20px;
    margin: 4px 2px;
    text-align: center;
    -webkit-transition-duration: 0.4s;
    transition-duration: 0.4s;;
    overflow: hidden;
    cursor: pointer;

    position: relative;
}

.RD_CL_Row3_Bt{
    position: relative;
    background-color: bisque;
    border: 2px solid blue;
    border-radius: 8px;
    font-size: 18px;
   
    padding: 10px 20px;
    margin: 4px 2px;
    text-align: center;
    -webkit-transition-duration: 0.4s;
    transition-duration: 0.4s;;
    overflow: hidden;
    cursor: pointer;
    
}

.RD_CL_Row4_Bt{
    position: relative;
    background-color: bisque;
    border: 2px solid blue;
    border-radius: 8px;
    font-size: 18px;
   
    padding: 10px 20px;
    margin: 4px 2px;
    text-align: center;
    -webkit-transition-duration: 0.4s;
    transition-duration: 0.4s;;
    overflow: hidden;
    cursor: pointer;
    
}

/*������*/
.RD_Content_Middle_Row1_Title{
    color: black;
    font-size: 30px;
   
}

.RD_Content_Middle_Row2_Title{
    color: black;
    font-size: 30px;
   
}

.RD_Content_Middle_Row3_Title{
    color: black;
    font-size: 30px;
   
}

.RD_Content_Middle_Row4_Title{
    color: black;
    font-size: 30px;
    
}

/*�Ҳ���*/
/*Row1*/
.RD_Content_Right_Row1{
 
    margin-left: 50px;
    margin-top: 50px;
}

/*Row2*/
.RD_Content_Right_Row2{
  
    margin-left: 50px;
    margin-top: 50px;
}

/*Row3*/
.RD_Content_Right_Row3{

    margin-left: 50px;
    margin-top: 50px;
}

/*Row4*/
.RD_Content_Right_Row4{

    margin-left: 50px;
    margin-top: 50px;
}

/*Img in Row1*/
.RD_Content_Right_Row1_Img{
    width: 200px;
    height: 123px;
}

/*Img in Row2*/
.RD_Content_Right_Row2_Img{
    width: 200px;
    height: 123px;
}

/*Img in Row3*/
.RD_Content_Right_Row3_Img{
    width: 200px;
    height: 123px;
}

/*Img in Row4*/
.RD_Content_Right_Row4_Img{
    width: 200px;
    height: 123px;
}

/*�ײ���Ч��*/
.RD_Bottom_Footer{

}

.RD_Bottom_Footer{
    clear: both;
    background-color: black;
    height: 200px;
    width: 1920px;
    position: relative;
    /*����Ԫ��������������ԣ���������Ԫ�ص�ͼƬ��ֱ���У��Ҹ�Ԫ�ص�align-items: center Ϊ����ȱ������*/
    display: flex;
    align-items: center;
}

.RD_Bottom_Picture{
    position: absolute;
    top:30%;
    left:45%;
    transform: translate(-30%, -45%);
}

.RD_Bottom_Footer_Text1{
    color: white;
    font-size: 18px;
    position: absolute;
    top: 60%;
    left: 50%;
    transform: translate(-55%, -50%);
    display: inline-block;
}

.RD_Bottom_Footer_Text2{
    color: white;
    font-size: 18px;
    position: absolute;
    top: 76%;
    left: 50%;
    transform: translate(-70%, -50%);
    display: inline-block;
}