.navbar {
    background-color: #0B3D2E;
    padding: 10px 20px;
    display: flex;
    gap: 20px;

    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar a {
    color: rgb(0, 0, 0);
    text-decoration: none;
    padding: 8px 14px;
    background-color: #2ECC71;
    border-radius: 10px;
    font-family: Arial, sans-serif;
}

.navbar a:hover {
    background-color: #98FF98;
    transform: scale(1.2);
    text-decoration-line: underline;
}

navbar{position: sticky;
    top: 145px;
    left: 20px;
    width: auto;
    background-color: #0B3D2E
}
navbar ul{
    font-size:42px;
}

.outer {
    background-color: #e0e0e0;
    padding: 40px;
}

.inner {
    background-color: white;
    padding: 20px;
    max-width: 600px;
    margin: 0 auto;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}
<style>
img {
  transition: transform 0.3s ease;
}

img:hover {
  transform: scale(2.5);
}
</style>