*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: sans-serif;
    font-weight: bold;
}
body{
    width: 100%;
    height: 100vh; 
    display: flex;
    justify-content: center;
    align-items: center;
    background: url("SEC.png");
    background-size: cover;
}
.calculator{
    /* width: 400px;
    height: 600px; */
    padding: 20px;
    border: 2px solid #000;
    border-radius: 17px;
    box-shadow: 0px 3px 15px rgba(0,0,0,0.8);
    background: rgba(0,0,0,0.5);
}
input{
    width: 320px;
    padding: 24px;
    margin: 10px;
    background: rgba(255,255,255,0.3);
    box-shadow: inset 0 0 8px rgba(0,0,0,0.5);
    font-size: 65px;
    text-align: right;
    color: #fff;
    border: solid 2px rgba(0,0,0,0.3);
    border-radius: 16px;
    text-shadow: 0px 1px 5px rgba(0,0,0,0.2);
   
}
input::placeholder{
    color: #fff;
}
button{
    width: 60px;
    height: 60px;
    color: #fff;
    margin: 10px;
    font-size: 24px;
    border-radius: 25px;
    border: solid 1px rgba(255,255,255,0.2);
    background: rgba(0,0,0,0.7);
    box-shadow: inset 0 0 8px rgba(0,0,0,0.5);
    text-shadow: 0px 1px 5px rgba(0,0,0,0.2);
    cursor: pointer;
    box-shadow: -1px 2px 10px rgba(0,0,0,0.5);
    /* transition: 0.3s; */
}
.ac,.del{
    font-size: 20px;
}
button:hover{
   color: #fff;
    background: #f67c14;
}
.equalBtn{
        background: #f67c14;
}
.operator{
    color: #f67c14;
}