Mistakes or Error

1

Hello, could someone help me find a solution to how to fix the following errors reported by HTML Checker?

  1. Error: CSS: shape-outside: Property shape-outside doesn’t exist.

    From line 19, column 3006; to line 19, column 3016

    e-outside:content-box}.btf{

  2. Error: Attribute href not allowed on element button at this point.

    From line 131, column 1; to line 131, column 28

    1 c1 z1">↩<button href="#" class="a1"><svg v

  3. Error: Element a is missing required attribute href.

    From line 348, column 1; to line 348, column 42

    v>↩</div>↩<a name="booking" class="btf v2 ps21 s22"></a>↩<

  4. Error: The name attribute on the a element is obsolete. Consider putting an id attribute on the nearest container instead.

    From line 348, column 1; to line 348, column 42

    v>↩</div>↩<a name="booking" class="btf v2 ps21 s22"></a>↩<