This is another example of a simple signup form, designed using CSS, Html, and Bootstrap framework 4. The font, CSS, and Bootstrap styles are imported to the code with their URLs. The body of the form is given the styles of font color as #999, background color as #f3f3f3, and font-family style as 'Roboto', sans-serif. The input text fields are given a font-size of 14px, and a border-color of #eee, which changes to #5cd3b4, in a focus event. The signup container is given a width of 500px, font color of #999, background color of #fff, and a box-shadow of 0px 2px 2px rgba(0, 0, 0, 0.3). The title of the form is displayed with a style set of font color as #333, display as inline-block, and a border-bottom as 3px solid #5cd3b4. The 'Signup' button is created as a primary type button and given the styles of font-size as 16px, font-weight as bold, and background as #5cd3b4. The background color of the button changes to #41cba9, in hover and focus events. Source: https://www.tutorialrepublic.com/codelab.php?topic=bootstrap&file=sign-up-form-horizontal