Change the font
font-family: Arial;
Change the background to image
background-image: url(http://www.css-tricks.com/examples/stripe.png);
Repeat the background image
background-repeat: repeat;
Change the background to a color
background-color: lightblue;
Change the background to a gradient
background: linear-gradient(red, yellow);
Change the text color
color: pink;
Make all the text lowercase
text-transform: lowercase;
Make all the text uppercase
text-transform: uppercase;
Completely remove an element from the page
display: none;
Add a text shadow
text-shadow: 3px 2px red;
Change Opacity
opacity: 0.5;
Rotate!
transform: rotate(20deg);
Skew
transform: skewX(20deg);
Add a border
border: 2px solid #73AD21;
Add rounded corners
border-radius: 25px;
Skew and Scale
transform:skew(60deg, -30deg) scaleY(.66667);
Add a box shadow
box-shadow: 10px 10px 5px grey;
Add a blur
filter: blur(5px);
Grayscale
filter: grayscale(100%);
Drop shadow
filter: drop-shadow(16px 16px 20px red) invert(75%);