*{
    margin:0;
    padding:0;
}

.frame{
    position: absolute;
    display: flex;
    flex-direction: column;
    justify-content:center;
    align-items:center;
    background-color: grey;
    height: 400px;
    width: 400px;    
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    border-radius: 10px;
}

.display-scr{
    position: relative;
    height: 20%;
    width: 80%;
    background-color: red;
    border-radius: 10px;
}

.output-win{
    position: absolute;
    display:flex;
    justify-content: center;
    align-items: center;
    height:80%;
    width: 80%;
    top: 50%;
    left:50%;
    transform:translate(-50%, -50%);
    background-color:black;
    color: lime;
    text-align: center;
    font-size: x-large;
    font-weight:bold;
    border-radius:10px;
}

.btns-body{
    height: 70%;
    width: 80%;
    display:flex;
    border-radius: 10px;
}

.btn-nums{
    height: 100%;
    width: 50%;
    background-color:azure;
    display:grid;
    grid-template-columns: 50% 50%;
    place-items:center;
    box-sizing: border-box;
    border-radius: 10px;

}

.btn-oprs{
    height: 100%;
    width: 50%;
    background-color:bisque;
    display:grid;
    grid-template-columns:50% 50%;
    place-items: center;
    box-sizing: border-box;
    border-radius: 10px;
}

.nums{
    display: flex;
    justify-content:center;
    align-items: center;
    height:100%;
    width:100%;
    border: 2px solid black;
    text-align: center;
    font-size:x-large;
    font-weight:bold;
    border-radius: 10px;
}

.oprs{
    display:flex;
    justify-content: center;
    align-items: center;
    border: 2px solid brown;
    height: 100%;
    width: 100%;
    text-align: center;
    font-size: x-large;
    font-weight: bold;
    border-radius: 10px;
}

.nums:hover {
    background-color:black;
    color: yellow;
}

.oprs:hover{
    border-color:black;
    background-color: lime;
    color:black;
}

#btn-clr:hover {
    border-color: black;
    background-color: orange;
    color: white;;
}

#btn-res:hover {
    border-color: black;
    background-color: green;
    color: white;
}