There are a few different ways that you can create a crack effect in Photoshop. One way is to use the pen tool to draw a path along the edge of the crack.
Once you have the path, you can use the stroke command to apply a brush stroke to the path. Another way is to use the eraser tool to create a ragged edge on the crack. You can also use the clone stamp tool to clone parts of the crack onto other areas of the image.
Once you have created the crack effect, you can add other effects to it such as a drop shadow or a bevel and emboss. You can also change the color of the crack by using the hue/saturation tool.
There are many different ways that you can style text in HTML. You can use the < p > tag to create a paragraph, the < b > tag to bold text, and the < u > tag to underline text. You can also use CSS to style text.