body{    
    }
.mainlo {
    margin-left: auto;
    margin-right: auto;    
    width: 800px;
    background-color: whitesmoke;
    border-left: groove;  
    border-right: groove;  
    border-bottom: groove; 
    border-bottom: groove; 
    border-width: thick;    
}
.dai {
    text-align: center;
    font-weight: bold;
    font-size: larger;
    font-size: x-large;
}
.in01 {
    margin-left: 50px;
}
.in02 {
    margin-left: 50px;
}
.lab1 {
    margin-left: 20px;
    font-weight: bold;
}   
.lab11 {
    margin-left: 20px;
    color: red;
    font-weight: bold;
}   
       
.shikaku {
    margin-left: 50px;
}   
.tare {
    margin-left: 50px;
}
.send {
    margin-left: 50px;
    margin-bottom: 30px;
}
.rise {
    margin-left: 50px;
    margin-bottom: 30px;
}

.desi {
    text-align: center;
    background-color: ghostwhite;
}