Using valid HTML5 markup, CSS rules and JavaScript code, create a web page (aesthetically styled with an external CSS file) that is linked to an external JavaScript file which contains JavaScript code to prompt the user for their birth month and day and then uses this information to calculate how many days until their next birthday. Display the following to the web page visitor:

The number of days until the visitors next birthday. The date of the visitor's next birthday in the following format: Day of week, Month Day, Year. E.g. Thursday, May 31, 2018. Hint: Write the algorithm first before creating any code.