I have noticed that many graphic designers pride themselves on their ability to "think outside the box". They like to keep themselves entertained by doing something new and interesting on every project. 

To be graphically creative is great, but when designing landing pages and web platforms the main goal is to be effective and clear. In other words, the key is to increase the conversion rates and have a fully call-to-action page.

Therefore graphic artists need to follow a minimalist and Zen-style visual aesthetic that focuses on conversion. 

The more common visual transgressions found on landing pages are the use of dark, wild or fully-saturated bright color backgrounds, as well as text and headlines with very large fonts in high-contrast colors (and even emphasized by the use of edging effects, drop shadows, color transitions and fades.)