* {
    padding: 0px;
    margin: 0px;
    box-sizing: border-box;
}

body {
    background-color: lightsteelblue;
}

header>h1,
header>h2 {
    color: red;
    background-color: darkblue;
    text-align: center;
    font-family: 'Courier New', Courier, monospace;
    padding: 0px 20px;
}

header>h1 {
    font-size: 3rem;
}

header>h2 {
    font-size: 2rem;
}

nav>ul {
    list-style-type: none;
    display: flex;
    flex-direction: column;
}

nav>ul>li {
    width: 100%;
}

nav>ul>li>a {
    background-color: lightgray;
    display: block;
    text-align: center;
    padding: 10px 0px;
    border: black solid 1px;
}

nav>ul>li>a:active {
    background-color: darkgrey;
}

main {
    background-color: darkcyan;
}

main>table {
    width: 70%;
    margin: auto;
}

main>table,
main>table>tbody>tr>th,
main>table>tbody>tr>td {
    border: black solid 2px;
    border-collapse: collapse;
}

main>section>table>tbody>tr>td#rodv {
    background-color: red;
    width: 300px;
}

main>section>table>tbody>tr>td#gul {
    background-color: yellow;
    width: 100px;
    height: 100px;
}

main>section>table>tbody>tr>td#rodh {
    background-color: red;
    width: 450px;
    height: 300px;

}

main>section>table {
    border-spacing: 0px;
    margin: auto;
}


main>article {
    padding: 10px 15px;
}

main>ul {
    list-style-type: none;
    height: 450px;
    background-color: blueviolet;

    display: flex;
    flex-direction: row;
    justify-content: center;
    flex-wrap: wrap;
    align-content: space-between;
    gap: 20px 40px
}

main>ul>li {
    background-color: orange;
    font-size: larger;
    font-weight: 900;
    height: 100px;
    width: 100px;
}

footer {
    background-color: lightcyan;
}