How to add footer clickable button

<a href="https://www.sololearn.com/profile/34017687/?ref=app"><button>Click here</button></a>

What do you mean exactly? You can put a button anywhere. If you have the footer section, put the button there. Do you have a code which you're working on? Can you share it? https://sololearn.com/compiler-playground/Wek0V1MyIR2r/?ref=app https://sololearn.com/compiler-playground/W0uW3Wks8UBk/?ref=app