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/* Global Styles */ * { margin: 0; padding: 0; box-sizing: border-box; } body { font-family: system-ui, -apple-system, sans-serif; line-height: 1.6; color: #333; background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); min-height: 100vh; display: flex; align-items: center; justify-content: center; } main { background: white; padding: 2rem; border-radius: 12px; box-shadow: 0 10px 30px rgba(0,0,0,0.2); max-width: 600px; text-align: center; } h1 { color: #2563eb; margin-bottom: 1rem; } p { color: #666; margin-bottom: 1.5rem; } button { background: #2563eb; color: white; border: none; padding: 0.75rem 1.5rem; border-radius: 6px; font-size: 1rem; cursor: pointer; transition: background 0.3s; } button:hover { background: #1d4ed8; }
// JavaScript Code document.getElementById('myBtn')?.addEventListener('click', function() { alert('Button clicked! 🎉'); console.log('Button was clicked'); });
div
span
p
a
button
h1
h2
h3
img
ul
ol
form
input
textarea
select
table
header
nav
main
section
article
aside
footer
video
audio
canvas
svg
iframe
label
br
color
background
font-size
font-weight
font-family
margin
padding
border
border-radius
width
height
display: flex
display: grid
display: block
position
flex-direction
justify-content
align-items
gap
grid-template-columns
box-shadow
text-align
line-height
opacity
transition
transform
cursor
overflow
z-index
max-width
console.log
getElementById
querySelector
querySelectorAll
addEventListener
function
arrow function
if
for
while
forEach
map
filter
reduce
setTimeout
setInterval
fetch
async
await
try/catch
localStorage.set
localStorage.get
JSON.parse
JSON.stringify
alert
confirm
prompt
Math.random
Math.floor
Date.now
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