6 excessive transition
Remarks:
IE10, Firefox, Chrome and Opera support the transition attribute.
Safari requires the prefix -webkit-.
transition abbreviation attribute, used to set four transition attributes in one attribute.
transition-property specifies the name of the CSS property that applies the transition.
transition-duration defines how long the transition effect takes. The default is 0.
transition-timing-function specifies the time curve of the transition effect. The default is "ease".
Different attribute values need to be known.transition-delay specifies when the transition effect starts. The default is 0.
7 frame animation
eg:
{
from {background: red;}
to {background: yellow;}
}
8 Flow Layout Media Query Responsive
Fluid layout: percentage layout, all sizes refer to the parent, and margin and padding are special
Refer to the widthResponsive: viewport unified writing method
text-shadow
Horizontal shadow, vertical shadow, blur distance, and shadow color
text-shadow: 5px 5px 5px #FF0000;
box-shadow: h-shadow y-shadow blur spread color inset;

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