body {
    margin: 0;
    font-family: 'Courier New', Courier, monospace;
    background: linear-gradient(to bottom, lightgreen, lightblue);
    display: flex;
    min-height: 100vh;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.container {
    background-color: aliceblue;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0 10px 20px rgba(0,0,0,.3);
    width: 90%;
    margin: 10px;
    display: flex;
    flex-direction: column;
    text-align: center;
    justify-content: center;
    align-items: center;
}

h2 {
    font-weight: 400;

}

.input {
    padding: 20px 10px;
    font-size: 18px;
    background-color: white;
    border-radius: 5px;
    text-align: center;
    width: 100px;
}

.errorMessage {
    color: red;
    font-weight: 600;
    margin: 10px;
    display: none;
}

.btn {
    text-transform: uppercase;
    width: 250px;
    height: 45px;
    margin: 20px 0;
    font-size: 18px;
    border-radius: 5px;
    background-color: black;
    color: aliceblue;
    transition: background-color 300ms ease-in-out;
}

.btn:hover {
    color: aliceblue;
    background-color: green;
    cursor: pointer;
}


.gallery img {
    width: 400px;
    height: 250px;
    object-fit: cover;
    border-radius: 5px;
    margin: 5px;
}

.gallery {
    display: none;    
}