* {
    margin: 0;
    padding: 0;
    box-sizing: border-box; /* Use box-sizing to manage widths */
}

html, body {
    height: 100%; /* Ensure the body takes full height */
}

body {
    display: flex;
    flex-direction: column; /* Arrange children in a column */
    background-image: url("/resources/images/background.jpg");
}

.header {
    height: 10%; /* Set a fixed height for the header */
    width: 100%;
    /*background-color: white; /* Optional: background color for visibility */
}

.left-panel {
    width: 10%;
    height: calc(100% - 15%); /* Adjust height to account for header and footer */
    background-color: yellow;
    position: fixed; /* Keep it fixed */
    top: 10%; /* Starts below the header */
    left: 0;
}

.main-content {
    width: 80%;
    height: calc(100% - 15%); /* Adjust height */
    margin-left: 10%; /* Leave space for left panel */
    /*overflow: auto; /* Allow scrolling if content is too long */
}

.right-panel {
    width: 10%;
    height: calc(100% - 15%); /* Adjust height */
    background-color: yellow;
    position: fixed; /* Keep it fixed */
    top: 10%; /* Starts below the header */
    right: 0;
}

.footer {
    background-color: rgba(0, 0, 0, 0.8); /* Light yellow-green with 80% opacity */

    /* background-color: lightgreen; */
    color: white;
    text-align: center;
    height: 5%; /* Set a fixed height */
    width: 100%;
    position: relative; /* Position it relative to the body */
}