*{
            margin:0;
            padding:0;
        }

        body {
            font-family: Arial, sans-serif;
            margin: 20px;
        }
        
        .container {
            max-width: 400px;
            margin: auto;
        }
        
        button {
            display: block;
            width: 100%;
            margin: 10px 0;
            padding: 10px;
            font-size: 16px;
            font-weight: bold;
        }
        
        h1{
            font-size:24px;
            text-align: center;
        }

        input{
            width: 95%;
            margin: 10px 0;
            padding: 10px;
            font-size: 16px;
        }

        #displayField {
            margin-top: 20px;
            padding: 10px;
            border: 1px solid #ccc;
            background-color:black; 
            color:lightgray; 
            text-align:center; 
            font-weight: bold;
        }

        .button{
            background-color:yellowgreen;
            color:black;
            border-radius:20px;
        }

        .button:hover{
            background-color:green;
            color:white;
        }

        footer {
            margin:auto;
            width:100%;
            text-align: center;
            font-size: 14.5px;
            padding: 3px;
            background-color: whitesmoke;
            color: black;
            display: block;
        }
        @media only screen and (min-width:768px){
            
            h1{
                font-size:24px;
                text-align: center;
            }
            
            footer {
                margin:auto;
                width:50%;
                text-align: center;
                font-size: 16px;
                padding: 3px;
                background-color: whitesmoke;
                color: black;
                display: block;
            }
        }