Is header in legend valid? Caption

Question

I use this in visual studio but the compiler claimed that h1 cannot be nested in legend element, but browser can render it anyway so i am confused

Answer 1

In HTML5, you can use an

for the same purpose a legend serves in a fieldset, since a fieldset is considered a sectioning root. So if you want to be free from the legend's wonky styling quirks, use this accessible markup:

    
Caption
    
Other stuff...