*{
    margin: 0;
    padding: 0;
    font-family: sans-serif;
    box-sizing: border-box;
    letter-spacing: 1px;
}

body{
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    max-height: 100%;
    background:linear-gradient(45deg,#0a0a0a,#3a4452)

}
.calcultor{
    padding: 15px;
    box-shadow: 0 0 15px #000;
    border: 2px solid rgb(116,114,114);
    border-radius: 15px;
}

.display input{
    width: 360px;
    border: none;
    outline: none;
    padding: 20px;
    margin:10px;
    background: transparent;
    color: #fff;
    font-size: 40px;
    text-align: right;
    cursor: pointer;
}
input::placeholder{
    color: #fff;

}
button{
    width: 70px;
    height: 70px;
    margin: 10px;
    background: transparent;
    color: #Fff;
    font-size: 22px;
    border: none;
    border-radius: 50%;
    outline: 1px solid#313131;
    outline-offset:10px ;
    box-shadow: -5px -6px 15px #000;
    cursor: pointer;

}
button:active{
    background: black;
    transform: translate(2px,2px);
}
.opr{
    color: #fbff00;
    background: #1e1919;
    font-weight: 600;
}
#eqbtn{
    background: orange;
    font-weight: 900;
}