header{ 
    position: fixed;
    top: 0;
    left: 0;
    height: 100px;
    width: 100%;
    display: flex;
    justify-content:space-between ;
    align-items:center ;
    padding-left: 120px;
    transition: 0.6s;
    z-index: 3;
      }
  header .logo{
    font-family:Georgia, 'Times New Roman', Times, serif ;
    font-size: 32px;
    font-weight: bold;
    letter-spacing: 1.5px;
    line-height: 60px;
    cursor: pointer;  
    color: #272727;
    transition-duration: 2s;
  }
  header .aha{
    float: right;
    margin-right: 20px;
    padding-right: 100px;
     color: #272727; 
  }
  header .aha li{
    display: inline-block;
    margin: 0 5px;
    line-height: 60px;
    list-style: none;
    position: relative;
  }
  header .aha li a{
    font-size: 16px;
    font-weight: 500;
    padding: 7px 13px;
    text-decoration: none;
    text-transform: uppercase;
    color: #272727;
    transition-duration: 2s; }
 
* {
	box-sizing: border-box;
}

body {
	font-family: Lato, sans-serif;
	margin: 0;
	padding: 3rem;
	min-height: 100vh;
	display: flex;
	justify-content: center;
	align-items: center;
	background: aliceblue;
}

img {
	width: 100%;
	display: block;
	aspect-ratio: 1 / 1;
	object-fit: cover;
	transition: transform 1000ms;
}

.gallery {
	list-style: none;
	margin: 0;
	padding-top:20px;
	display: grid;
	gap: 2rem;
	grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr));
	max-width: 100%;
	width: 70rem;
}

figure {
	margin: 0;
	position: relative;
	overflow: hidden;
}

figure::after {
	content: '';
	position: absolute;
	top: 50%;
	left: 50%;
	width: 200%;
	height: 200%;
	background: rgba(0, 0, 0, 0.5);
	transform-origin: center;
	opacity: 0;
	transform: scale(2);
	transition: opacity 300ms;
}

figcaption {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	display: flex;
	justify-content: center;
	place-items: center;
	text-align: center;
	padding: 1rem;
	color: white;
	font-size: 1.2rem;
	z-index: 1;
	opacity: 0;
	transition: opacity 600ms, transform 600ms;
}

a:is(:hover, :focus) figure::after {
	opacity: 1;
}

a:is(:hover, :focus) figcaption {
	opacity: 1;
	transition: opacity 600ms;
}

@media (prefers-reduced-motion: no-preference) {
	figcaption {
		transform: translate3d(0, 2rem, 0);
	}
	
	figure::after {
		border-radius: 50%;
		opacity: 1;
		transform: scale(0);
		transition: transform 900ms;
	}
	
	a:is(:hover, :focus) figure::after {
		transform: scale(2.5);
	}

	a:is(:hover, :focus) figcaption {
		opacity: 1;
		transform: translate3d(0, 0, 0);
		transition: opacity 600ms 400ms, transform 600ms 400ms;
	}

	a:is(:hover, :focus) img {
		transform: scale(1.2);
	}
}