#wrapper {
                width: 95%;
                margin-left: auto;
                margin-right: auto;
                overflow: auto;
            }
            body{
                background-color: #f19b2b;
            }
            #informaticslogo {
                width: 40%;
                margin-left: 30%;
                margin-right: 30%;
            }

            hr {
                width: 80%;
                background-color: #888888;
            }
            
            header {
                text-align: center;
            }
            
            header h1 {
                font-family: Helvetica, sans-serif
            }
            
            fieldset {
                margin-bottom: 2%;
                border: none;
            }
            
            

            
            input[type="submit"] {
                margin-left: 40%;
                margin-right: 45%;
                width: 300px;
                padding: .5%;
                font-size: 1.2em;
                font-family: Helvetica, sans-serif;
                background-color: black;
                color: #ffffff;
                border-radius: 3px;
                box-shadow: 1px 3px 3px #444444;
            }
            #part1,
            #part2,
            #part3{
                color:#ffffff;
                width: 200px;
                padding: 2;
                margin: auto;
                box-sizing: border-box;
                text-align: center;
                background-color: black;
            }

            #rangevalue {
                width: 2em;
            }