*{
    padding: 0;
    margin: 0;
}

body{
    height: 100vh; 
    display: flex;
    justify-content: center;
    align-items: center;
        
}

.cacl{
    height: 250px;
    width: 160px;
    border: 2px solid black; 
    border-radius: 8px;
    background-color: #373a40;
    
}

.display{
    width: 144px;
    height: 40px;
    border: 2px solid black;
    position: relative;
    margin-left: 6px;
    margin-top: 20px;
    border-radius: 5px;
    font-size: 25px;
    text-align: right;

}

.btn{
   width: 30px;
   height: 30px; 
   position: relative;
   margin-top: 10px;
   border: 2px solid black;
   border-radius: 5px;
   cursor: pointer;
   background-color: #373a40;
   color: white;
   font-weight: bolder;
}

.buttons{
    display: flex;
    position: relative;
    margin-left: 8px;
    margin-top: 10px;
    
}