CSS3 box-shadow attribute is used to describe one or more shadow effects of an element. This attribute allows you to achieve almost any shadow effect you want. However, the box-shadow attribute syntax and value are very flexible, which is a bit difficult for novices to understand.
Simulated address: https://www.html.cn/tool/css3Preview/Box-Shadow.html
CSS Code:
/* offset-x | offset-y | color */ box-shadow: 60px -16px teal; /* offset-x | offset-y | blur-radius | color */ box-shadow: 10px 5px 5px black; /* offset-x | offset-y | blur-radius | spread-radius | color */ box-shadow: 2px 2px 2px 1px rgba(0, 0, 0, 0.2); /* inset | offset-x | offset-y | color */ box-shadow: inset 5em 1em gold; /* Any number of shadows, separated by commas */ box-shadow: 3px 3px red, -1em 0 0.4em olive; /* Global keywords */ box-shadow: inherit; box-shadow: initial; box-shadow: unset;
Value description:
inset: The default shadow is outside the border. After using inset, the shadow is within the border (even a transparent border), above the background and below the content. Some people also like to put this value at the end, and browsers also support it.
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