/* Set the page text to sans-serif font */
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}
/* Style the header */
header {
    background-color: #4CAF50;
    color: white;
    padding: 10px 0;
    text-align: center;
}
/* The div named "panel" should fill the width and height of the viewport but leave room for the header. It should have a blue border */
#panel {
    border: 2px solid blue;
    width: 100vw;
    height: calc(100vh - 60px); /* Adjust height to leave room for header */
    box-sizing: border-box; /* Include border in the element's total width and height */
    background-color: white;
}