html{
    box-sizing: border-box;
    height: 100%;
}
*, *::before, *::after{
    box-sizing: inherit;
    margin: 0;
    padding: 0;

}
body{
    align-items: center;
    background-color: hsl(0, 0%, 10%);
    display: flex;
    font-family: 'Arial', sans-serif; 
    font-display: swap;
    height: inherit;
    justify-content: center;
}

.container{
    backdrop-filter: blur(10px);
    background: hsl(0, 0%, 20%);
    border: 1px solid black;
    border-radius: 10px;
    box-shadow: 0 5px 30px rgba(20,20,20,0.1);
    color: black;
    -webkit-backdrop-filter: blur(10px);
    flex-basis: 400px;
    height: 550px;
    padding: 20px 35px;
}

.screen{
    padding: 20px;
    text-align: right;
    width: 350px;
    border: 1px solid #000000;
    border-radius: 15px;
    box-shadow: 0 5px 30px rgba(20,20,20,0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    background: whitesmoke;
    font-size: 30px;
    overflow: auto;
   

}

.button-row{
    display: flex;
    justify-content: space-between;
    margin: 5% 0;
}
.button{
    color: black;
    flex-basis: 20%;
    font-family: inherit;
    font-size: 25px;
    height: 70px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(20,20,20,0.1);
    border-radius: 15px;
    box-shadow: 0 5px 30px rgba(20,20,20,0.1);
    -webkit-backdrop-filter: blur(10px);
    background: whitesmoke;
    cursor: pointer;
}

.button:last-child{
    border: 1px solid black;
    border-radius: 15px;
    box-shadow: 0 5px 30px rgba(20,20,20,0.1);
    color: black;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    background: hsl(50, 100%, 50%);
}

.button:last-child:hover{
    background: hsl(50, 100%, 70%);
    color: inherit;
}
.button:last-child:active{
    background:hsl(50, 100%, 100%);
}

.button:hover{
    background: inherit;
}

.button:active{
    background-color: hsl(50, 100%, 100%);
}

.clear{
    flex-basis: 47%;}

.zero{
    flex-basis: 47%;
}
/* Media query for desktop screens */
@media only screen and (max-width: 768px) {
    .container {
        flex-basis: 80%;
    }

    .screen, .button-row {
        width: 100%;
    }

    .button {
        flex-basis: 23%;
    }
}

/* Media query for mobile screens */
@media only screen and (max-width: 480px) {
    .container {
        flex-basis: 100%;
    }

    .button {
        flex-basis: 30%;
    }
}