body{
    width: 43%;
    margin: auto;
    background-color: bisque;
    
}
h1{
    text-align: center;
    font-size: 2.2rem;
    font-family: Verdana, Geneva, Tahoma, sans-serif;
}
#res{
    background-color: lightgray;
    border: solid;
    height: 40px;
    font-size: 35px;
}
#princi, #rate, #tenure{
    background-color: lightgray;
    border: solid;
    height: 25px;
    font-size: 20px;
}
#lab{
   
    color: black;
    
    font-size: 20px;
}
#btn{
    background-color: lightgray;
    color: black;
    height: 35px;
    width: 50px;
    font-size: 25px;
    
}