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

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #f0f0f0;
    padding: 10px;
}

#dateDisplay {
    font-weight: bold;
    font-size: 1.5em;
}

#categoryTable {
    border-collapse: collapse;
    width: 100%;
}

#categoryTable th, #categoryTable td {
    border: 1px solid #ddd;
    padding: 10px;
}

#categoryTable th {
    background-color: #f0f0f0;
}

#addCategoryButton {
    margin-top: 10px;
}

.submit-input-container {
    display: flex;
    align-items: center;
}

.submit-input-container input {
    width: 30px;
    text-align: center;
}