Hello!
I would like to share with you the most complete information on trends and trends in web design as early as this year 2013.
Minimalism

Over the past six months, this area has become very popular among designers, especially in the design of business cards. The essence of this trend lies in the simplicity of the elements, but at the same time the functional interface. In minimalism, black and white tones are often used, corners without rounding (in most cases) to show the accuracy of the style. Here you can use a minimum of pictures, but then impose more different effects. The well-known
Bootstrap is ideal for development.
Adaptive design

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Where do without him! Last year, when many developers and designers were just beginning to study this technology, and many did not even know what it was, one famous front-end developer said:
“I believe on the day when conversations about adaptive design stop, and not because it will disappear, but because it will become self-evident”
And this day is near. Every day, websites with responsive design as well as mobile devices are becoming more and more. But while this technology remains in trend.
Fixed menu

Use
position: fixed; for the navigation menu or sidebar it has become a good tradition, especially for websites with responsive design, because Now the site has become much more convenient to move around, besides, it looks quite stylish. Plus, there was no need for the "go up" button.
CSS3 filters

Only on
Habré, this topic has been discussed 10 times over the past few months, not to mention the global community, so this technology can certainly be called the trend of this year. But, unfortunately, today only webkit browsers support this chip, so let's hope that this year it will receive more support.
CSS3 animation

Using the
transition transform property, designers can now easily make cool effects that previously could only be done using JS. In 2012, this technology has received great support among developers and designers, so it certainly refers to the trends of this year.
Photo as background for the site

This trend as well as adaptive design is not new, but recently it can be increasingly seen on the portfolio sites of various studios. This technique is also suitable for car dealership sites, travel companies, modeling agencies, etc. This technique is very attracts the attention of users, as well as allows the designer to experiment on the layout of the site.
Custom geometry

We are used to seeing the standard construction of interface elements, but such sites break this tradition and surprise with their creativity. Quite an interesting approach! I think you should pay attention to it.
Design Typography

Due to the abundance of
web and
icon fonts, you can now create interesting effects, such as 3D text or a button in the form of letters. By the way, recently there have been big headlines on many sites, maybe it will become a new trend.
Conclusion
Keeping up with the times is nice, but remember that trends come and go, and these are just recommendations for realizing your ideas. The main thing is to follow your style and presentation, and only then your design will always be interesting to the public.