style.css

body {
    display: flex;
    flex-direction: row;
    justify-content: center;
}

footer {
    position: fixed;
    margin: 10px;
    bottom: 0;
    right: 0;
}

#container {
    width: 80%;
}

#categories {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-evenly;
    gap: 15px;
}

#addCatForm {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-evenly;
    margin: auto;
    align-items: center;
    border: 1px solid gray;
    width: 40%;
}

#removeAllCatsForm {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-evenly;
    align-items: center;
    width: 40%;
    margin: 10px auto;
}

#final {
    display: flex;
    flex-direction: column;
    align-items: center;
    border-top: 1px solid gray;
}

p {
    text-align: justify;
    max-width: var(--input-width);
}

#chart {
    max-width: 450px;
    margin: auto;
}

input[type="submit"], button[type="submit"] {
    border: none; /* Remove border */
    color: white; /* White text color */
    padding: 10px 20px; /* Add padding */
    text-align: center; /* Center text */
    text-decoration: none; /* Remove underline */
    display: inline-block; /* Display as inline block */
    font-size: 16px; /* Increase font size */
    margin: 4px 2px; /* Add some margin */
    transition-duration: 0.4s; /* Add animation duration */
    cursor: pointer; /* Add cursor style */
    border-radius: 4px; /* Add border radius */
}

#addCat {
    background-color: #4c6faf;
}

#removeCats {
    background-color: #6a1010;
}

input[type="submit"]:hover, button[type="submit"]:hover {
    background-color: #45a049; /* Darker green */
}

input[type="color"] {
    color: #af0ed1;
}