* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

html, body {
    height: 100%;
    display: flex;
    flex-direction: column;
}

header {
    background-color: #7fa6ce;
    text-align: center;
    padding: 1rem;
    flex-shrink: 0; /* Prevent the header from shrinking */
}

main {
    flex-grow: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: auto; /* Enable scrolling if the canvas is larger */
    background-color: rgb(111, 111, 111);
}

#canvas1 {
    background-color: rgb(111, 111, 111);
}

.arrowImage {
    width: 100px; /* Original width */
    height: auto;
    max-width: 100%; /* Prevents the images from growing beyond their container */
}

footer {
    display: flex;
    justify-content: center; /* Distribute images evenly within the footer */
    background-color: #7fa6ce;
    padding: 5px;
}

.arrowImage {
    max-width: 25%; /* Each image can be up to 25% of the footer width, if space allows */
    min-width: 75px;
    padding: 5px;
}