tabs 底部分割线svg实现

<svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="1000" height="100">
<path d="M0 50 L400 50 Z" stroke="black" stroke-width="2" fill="none"/>
<path d="M400 50
Q425 50
450 35
475 20
500 20
525 20
550 35
575 50
600 50"
stroke="black" stroke-width="2" fill="none"/>
<path d="M600 50 L1000 50 Z" stroke="black" stroke-width="2" fill="none"/>
</svg>