body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

#navbar {
    background-color: #333;
    overflow: hidden;
}

#navbar a {
    float: left;
    display: block;
    color: white;
    text-align: center;
    padding: 14px 20px;
    text-decoration: none;
}

#navbar a:hover {
    background-color: #ddd;
    color: black;
}

#navbar a.active {
    
    color: white;
}

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

.date-picker-container {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

.date-picker-item {
    margin: 0 20px;
    text-align: center;
}

.date-picker-item label {
    display: block;
    margin-bottom: 5px;
}

.ui-datepicker {
    width: auto;
    display: inline-block;
}

h1 {
    text-align: center;
    margin-bottom: 20px;
    font-weight: normal;
}

.chart-container {
    background: white;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    padding: 20px;
    margin: 2.5%;
    width: 45%;
    max-width: 600px;
    box-sizing: border-box;
}

.chart-container-wrapper {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

.chart-container canvas {
    display: block;
    width: 100%;
    height: auto;
    max-height: 300px;
    max-width: 100%;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .chart-container {
        width: 100%;
        padding: 10px;
    }
}