@import url('https://fonts.googleapis.com/css2?family=Montserrat:ital,wght@0,100..900;1,100..900&display=swap');
*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Orbitron'
}
body{
    width: 100%;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(45deg, grey, #0a0a0a);

}
.calculator{
    border: 10px outset rgba(0, 0, 0, 0.6);
    padding: 20px;
    border-radius: 30px;
    background: linear-gradient(45deg, #0a0a0a, rgb(86, 86, 86));    
    box-shadow: 10px 10px 5pxpx rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);

}
input{
    width: 320px;
    padding: 20px;
    background: rgb(152, 161, 146);
    border-radius: 10px;
    /* border: none; */
    margin: 20px 20px 20px 25px;
    border: 5px black inset;
    box-shadow: 0px 3px 15px rgbs(84, 84, 84, 0.1);
    font-size: 40px;
    text-align: right;
    cursor: pointer;
    color: rgb(0, 0, 0);


}
input::placeholder{
    color: #000000;

}
button{
    border: 2px outset black;
    border: none;
    width: 70px;
    height: 70px;
    margin: 10px;
    border-radius: 50%;
    background-color: transparent;
    filter: blur();
    color: #ffffff;
    font-size: 20px;
    box-shadow: -5px -5px  10px rgb(0, 0, 0, 0.7),
                5px 5px 10px rgb(56, 56, 56);
    /* box-shadow: 10px 10px 5px rgba(0, 0, 0, 0.1); */
    cursor: pointer;
}
.eql{
    background-color: orangered;
}
.opr{
    color: rgb(85, 250, 110);
    font-weight: bold;
}

hr{
    margin: 20px;
    /* margin-left: 50px; */
    width: 90%;
    height: 0.5px;
    background-color: #0a0a0a;
}

button:active{
    border: 2px outset black;
    border: none;
    width: 70px;
    height: 70px;
    margin: 10px;
    border-radius: 50%;
    background-color: transparent;
    color: #ffffff;
    font-size: 20px;
    box-shadow: 2px 2px 10px rgb(0, 0, 0, 0.7),
     -2px -2px 10px rgba(97, 96, 96, 0.1);
    cursor: pointer;
    font-weight: bold;
    transition: 0.3s;
}