Layer effects are linked to the layer contents. When you move or edit the contents of the layer, the same effects are applied to the modified contents. For example, if you apply a drop shadow to a text layer and then add new text, the shadow is added automatically to the new text. A layer style is one or more effects applied to a layer or layer group. You can apply one of the preset styles provided with Photoshop or create a custom style using the Layer Style dialog box. The layer effects icon appears to the right of the layer's name in the Layers panel. You can expand the style in the Layers panel to view or edit the effects that compose the style.
I don't know for this term, generally You can change any Layer style in Photoshop except if this mean style which is created (style consist from several Layer effects) and ready to apply with one click.
Click on layer in LAYERS palette to select it (you can not apply layer style to Background layer) then go to Layer > Layer Style > Bevel and Emboss, adjust settings for bevel then click on Blending Options: Default. Find Fill Opacity slider and drag it to the left to set 0%. Click OK in upper right corner to confirm and exit dialog.
From Layer Style dialog which you can access from Layer > Layer Style > choose effect from list. Effects are listed at right side of Layer Style dialog, Style consist from several effects like Drop Shadow, Bevel and Emboss, Satin...
Easy way is to right click on fx which is located on the right side of layer (not fx at bottom of LAYERS panel) and choose Copy Layer Style, then right click on layer where you want to paste style and choose Paste Layer Style.
To apply non-destructive effects like drop shadow, bevel and emboss. Effects are non-destructive because you can always change them or even remove them. You can also control blending options and opacity of layer using layer style.
Layer > Layer Style.
From Layer > Layer Style > Drop Shadow.
You can layer CSS element above HTML easily. It can be done as :<style> #id { ... } </style>
To apply the same color correction to multiple clips in Premiere Pro, you can create an adjustment layer and apply the color correction effect to that layer. Then place the adjustment layer above the clips you want to correct. This will apply the color correction to all the clips below the adjustment layer.
To apply effects to an After Effects layer, select the layer you want to add effects to, then go to the Effects Presets panel and choose the effect you want to apply. Drag and drop the effect onto the layer, and adjust the settings in the Effect Controls panel to customize the effect.
A style or a format template.