body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

main {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem;
}

h2 {
    margin-top: 0;
}

#login-form, #file-directory {
    margin-top: 2rem;
}

form {
    display: flex;
    flex-direction: column;
    max-width: 500px;
    margin: 0 auto;
}

label {
    margin-bottom: 0.5rem;
}

input {
    padding: 0.5rem;
    margin-bottom: 1rem;
}

button {
    background-color: #1a2f99;
    color: #fff;
    border: none;
    border-radius: 0.312rem;
    font-size: 1rem;
	outline: none;
    padding: 1rem 1.5rem;
    cursor: pointer;
}

button:hover {
	background-color: #287ae6;
    box-shadow: 0 1px 1px 0 rgba(66,133,244,0.45), 0 1px 3px 1px rgba(66,133,244,0.3);
}

ul {
    list-style: none;
    padding: 0;
}

li {
    margin-bottom: 0.5rem;
}

#thumbnail-album {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

.thumbnail-item {
    flex-basis: calc(50% - 10px);
    margin-bottom: 20px;
    box-sizing: border-box;
    overflow: hidden;
    position: relative;
}

.thumbnail-item img {
    width: 100%;
    height: auto;
    min-width: 100%;
    min-height: 100%;
    object-fit: cover;
    object-position: center;
}