body{
    background-color: #93d9f0;
}

.heading{
    color: #b27134;
    font-size: 2rem;
    font-weight: bold;
    font-family: 'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif;

}
.container{
    width: 250px;
    height: 400px;
    margin: 80px auto;
    border-radius: 10px;
    background-color: rgb(214, 214, 214);
    box-shadow: 5px 5px 10px #b6a9a9 , -5px -5px 10px #ffffff;
}

.cal-box{
    width: 200px;
    margin: 20px auto;
}
#display{
    border: none;
    outline: none;
    color: black;
    text-align: right;
    font-weight: 600;
    padding: 15px;
    margin: 30px 0 20px 0;
    background: transparent;
    box-shadow: inset 2px 2px 5px #babecc , inset -5px -5px 10px #ffffff;
}

.button{
    margin: 15px 0 0 5px;
    width: 42px;
    height: 42px;
    border: none;
    outline: none;
    font-size: 18px;
    font-weight: bold;
    border-radius: 8px;
    background: rgb(214, 214, 214);
    box-shadow: 5px 5px 10px #b6acac , -5px -5px 10px #faf4f4;
    display: inline-block;
}

.button:active{
    box-shadow: inset 1px 1px 2px #babeec, inset -1px -1px 2px #fff ;
}

.clearButton{
    background: red;
    color: white;
}

.mathbutton{
    background: black;
    color: white;
}

.footer{
    background: transparent;
    position: relative;
    bottom: 50px;

}
.footer_name{
    font-size: medium;
}
h3{
    text-align: center;
    text-transform: uppercase;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
.name{
    color: rgb(215,0,0);
}

h4{
    text-align: center;
    text-transform: unset;
    font-style: italic;
}

@media screen and (max-width: 746px) {
    .button{
        margin: 15px 0 0 5px;
        width: 42px;
        height: 42px;
        border: none;
        outline: none;
        font-size: 18px;
        font-weight: bold;
        border-radius: 8px;
        background: rgb(214, 214, 214);
        box-shadow: 5px 5px 10px #b6acac , -5px -5px 10px #faf4f4;
        display: inline-block;
    }
    
    .button:active{
        box-shadow: inset 1px 1px 2px #babeec, inset -1px -1px 2px #fff ;
    }
    
    .clearButton{
        background: red;
        color: white;
    }
    
    .mathbutton{
        background: black;
        color: white;
    }
}

@media screen and  (max-width:480px) {
    .container{
       height: 26rem;
    }
    .button{
        height: 2.4rem;
        width: 2.3rem;
    }
    .footer_name{
        position: relative;
        bottom: 20px;
        font-size: small;
    }
    
}