title: onclick coding html css jquery to highlight 2 buttons
body: <p>I want to change this coding</p>
  
  2
  
  <p>Basically I have 4 buttons 1  2  3  4
  When I click 1 1 highlights
  When I click 2 (the code above ) 2 highlights</p>
  
  <p>What I want to do is when I click 2 In want 1 and 2 to highlight.</p>
  
  <p>if I change the code using F12 to </p>
  
  2
  
  <p>when clicking 2 the number 3 highlights</p>