https://stackoverflow.com/questions/22672368/how-to-make-a-transparent-html-button/22672444
https://www.w3schools.com/howto/howto_css_zoom_hover.asp
https://stackoverflow.com/questions/22092724/align-inline-block-divs-to-top-of-container-element
https://stackoverflow.com/questions/9371669/how-to-place-a-text-next-to-the-picture
https://stackoverflow.com/questions/29102888/responsive-flexbox-divs
https://stackoverflow.com/questions/25311541/how-to-vertically-align-text-inside-a-flexbox
https://stackoverflow.com/questions/14784852/how-to-find-second-p-element-in-a-div
https://stackoverflow.com/questions/36568657/nth-child-selector-not-working-in-css
https://stackoverflow.com/questions/2751127/how-to-select-the-first-second-or-third-element-with-a-given-class-name
https://css-tricks.com/snippets/css/prevent-long-urls-from-breaking-out-of-container/
https://css-tricks.com/almanac/properties/h/hyphenate/
https://css-tricks.com/overriding-default-button-styles/
https://stackoverflow.com/questions/2187008/styling-an-anchor-tag-to-look-like-a-submit-button
https://stackoverflow.com/questions/20626685/better-way-to-set-distance-between-flexbox-items
http://animista.net/
https://stackoverflow.com/questions/32802202/how-to-center-a-flex-container-but-left-align-flex-items https://webdesign.tutsplus.com/tutorials/how-to-build-a-responsive-navigation-bar-with-flexbox--cms-33535
https://itnext.io/how-to-build-a-responsive-navbar-using-flexbox-and-javascript-eb0af24f19bf https://www.nomadicmatt.com/travel-guides/italy-travel-tips/ Informatie over italie gebruikt
https://www.w3schools.com/howto/howto_css_table_responsive.asp
https://www.w3schools.com/howto/howto_css_login_form.asp
https://www.w3schools.com/howto/tryit.asp?filename=tryhow_css_login_form
https://www.w3schools.com/w3css/w3css_input.asp
https://oege.ie.hva.nl/~ruizenr1/Tiger/js/tiger.js
https://developer.mozilla.org/en-US/docs/Web/API/NodeList
https://developer.mozilla.org/nl/docs/Web/JavaScript/Reference/Errors/Not_a_function
https://developer.mozilla.org/en-US/docs/Web/API/Event/preventDefault
https://developer.mozilla.org/en-US/docs/Web/CSS/grid-template-rows
https://css-tricks.com/snippets/css/complete-guide-grid/
https://css-tricks.com/snippets/css/a-guide-to-flexbox/
https://css-tricks.com/almanac/selectors/r/required/
https://www.w3schools.com/cssref/sel_required.asp
https://www.w3schools.com/howto/howto_css_custom_checkbox.asp
http://jsfiddle.net/5g3w32ug/
https://www.w3schools.com/howto/tryit.asp?filename=tryhow_css_custom_checkbox
https://codepen.io/spacemonkey/pen/vmZROv
https://stackoverflow.com/questions/53164784/how-to-use-the-fetch-api-method-on-open-weather-api
Samengewerkt met Sam de Kanter voor de overflow X (scrollbaar voor mobiel)