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<!DOCTYPE html> <html> <head> <style> div { height: 80px; background-color: pink; } div.a { width: calc(100px * tan(45deg)); } div.b { width: calc(100px * tan(0.125turn)); } div.c { width: calc(100px * tan(0.5773502)); } div.d { width: calc(100px * tan(pi / 3)); } </style> </head> <body> <h1>tan() 函数</h1> <p>使用 tan() 函数设置元素的宽度：</p> <h2>width: calc(100px * tan(45deg)):</h2> <div class="a">Hello World!</div> <br> <h2>calc(100px * tan(0.125turn)):</h2> <div class="b">Hello World!</div> <br> <h2>width: calc(100px * tan(0.5773502)):</h2> <div class="c">Hello World!</div> <h2>width: calc(100px * tan(pi / 3)):</h2> <div class="d">Hello World!</div> </body> </html>