*{
    margin: 0px;
    padding: 0px;
    color: white;
    
}
body{
    height:100vh ;
    background-color: black;
    background-image: url("background1.jpg");
    background-size: cover;
}


.outer{
    height: 540px;
    width: 320px;
    padding: 15px;
    background: transparent;
    backdrop-filter: blur(30px);
    background-size: cover;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    margin:10px auto;
    border-radius: 20px;
    box-shadow: 0px 0px 20px black;
    
}

h1{
    font-size: 56px;
    font-family: 'Protest Revolution', sans-serif;
    padding:  8px;
    display: inline;
    border-radius: 10px;
    border: 2px solid black;
    box-shadow: 0px 0px 20px black;
    transition-duration: 1s;
    transition-timing-function: ease-in-out;
    color: black;
}

h1:hover{
    transform: scale(1.1);
    border: none;
    box-shadow: none;
}

.header{
    margin-top: 20px;
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
}

.first-out-div,.second-out-div,.third-out-div,.fourth-out-div,.fifth-out-div,.sixth-out-div{
    display: flex;
    justify-content: space-between;
    width: 100%;
}


.inner-elements{
    font-size: 24px;
    font-weight: 900;
    font-family: 'Protest Revolution', sans-serif;
    width: 65px;
    height: 65px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color:black;
    border-radius: 10px;
    outline: none;
    border: none;
}

.operator{
    transition-timing-function: ease-in;
    transition-duration: 0.2s;
}

.cal-input{
    height: 65px;
    width: 100%;
    border-radius: 20px;
    outline: none;
    background-color:black;
    border-radius: 10px;
    border: 2px solid black;
    font-size: 24px;
    text-align: right;
    padding-right: 20px;
}

.operator:hover{
    background-color: rgba(255, 0, 0, 0.825);
    transform: scale(1.1);
    box-shadow:0px 0px 5px red;
}

.controls{
    transition-timing-function: ease-in;
    transition-duration: 0.2s;
}

.controls:hover{
    background-color: rgba(0, 0, 0, 0.501);
    transform: scale(1.1);
    box-shadow:0px 0px 5px black;
}

.operand{
    transition-timing-function: ease-in;
    transition-duration: 0.2s;
}

.operand:hover{
    background-color: rgba(0, 128, 0, 0.825);
    transform: scale(1.1);
    box-shadow:0px 0px 5px rgb(0, 128, 0);
}

@media(max-width:454px){
    h1{
        font-size: 40px;
    }

    .outer{
        padding-top:0px ;
        height: 480px;
        width: 250px;
        justify-content: space-evenly;
    }
    .inner-elements{
        height: 45px;
        width: 45px;
        font-size: 20px;
    }
    .cal-input{
        height: 40px;
    }
}

@media(max-width:336px){
    h1{
        font-size: 32px;
    }
    .outer{
        height: 420px;
        width: 220px;
    }
}