* {
padding: 0;
margin: 0;
box-sizing: border-box; 
}
html {
    scroll-behavior: smooth;
}
body{
    background: #28384a;
}
header {
    background-color: rgb(255, 228, 250);
    width: 100%;
    top: 0%;
    right: 0;
    height: 100px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: fixed;
    font-size: 20px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    z-index: 100;
    box-shadow: 4px 4px 30px rgb(24, 24, 24);

}
.aisha{
    margin-top: 10px;
    font-size: 20px;
    font-family: Arial, Helvetica, sans-serif;
}
header a {
    text-decoration: none;
    color: #3D4E5C;
}
header a:hover {
    color: #2287DB;
    transition: 0.5s ease;
}
nav ul{
    list-style-type: none;
    padding: 5px;
}
nav ul li {
    display: inline-block;
    margin-right: 10px;
}
.title {
    margin-top: 150px;
    text-align: center;
    font-size: 50px;
    color: aliceblue;

}
.thumbnail {
    width: 40rem;
    display: grid;
    height: auto;
    justify-self: center;
    perspective: 1000px;
    margin: 1rem;
}

.thumbnail-inner {
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.8s ease;
}

.thumbnail:hover > .thumbnail-inner {
    transform: rotateY(180deg);
}

.thumbnail-front,
.thumbnail-back {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    overflow: hidden;
    border-radius: 1rem;
}

.thumbnail-front img,
.thumbnail-back img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.thumbnail-back {
    transform: rotateY(180deg);
    position: relative;
}

.thumbnail-back::before {
    content: "";
    position: absolute;
    inset: 0;
    filter: sepia(2);
    background: rgba(144, 0, 255, 0.32);
    
}

.thumbnail-text {
    position: absolute;
    inset: 0;
    z-index: 2;
    color: white;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 1rem;
}
.thumbnail-text a {
    color: rgb(255, 158, 79);
    text-decoration: none;
}

.thumbnail-text a:hover {
    color: white;
    transition: .4s ease;
    text-decoration: none;
}
footer {
  width: 100%;
  position: fixed;
  bottom: 0;
  right: 0;
  left: 0;
  text-align: center;
  background-color: antiquewhite;
  font-size: x-small;
  padding: 1rem 0;
  margin-top: 2rem;
}