body {
    font-family: Arial, sans-serif;
    background-color: #f5f5f5;
    margin: 0;
    padding: 0;
}

#app {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
}

.header {
    background-color: #3f51b5;
    color: #fff;
    padding: 15px;
    width: 100%;
    text-align: center;
    margin-bottom: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.form-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

.form-container input {
    padding: 10px;
    margin: 5px;
    border: 1px solid #ccc;
    border-radius: 4px;
    width: 300px;
}

button {
    background-color: #3f51b5;
    color: #fff;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    margin-top: 10px;
}

button:hover {
    background-color: #303f9f;
}

#database {
    width: 80%;
    margin-top: 20px;
}

#collections {
    padding: 10px;
    border: 1px solid #ccc;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.collection, .document {
    margin-bottom: 10px;
    padding: 10px;
    border-bottom: 1px solid #ddd;
}

.field {
    padding: 5px 0;
}