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

header {
    background-color: brown;
}

header>h1,
header>h2 {
    color: lime;
    text-align: center;
    font-family: 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%;
    text-align: justify;
}

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: darkgray;
}


main {
    /* height: 500px; */
    /* background-color: aquamarine; */
}

main>table{
    width: 100%;
}
/* 
main>table>tbody>tr>th{
    
} */

main>table>tbody>tr:nth-child(even){
    background-color: white;
}

main>table>tbody>tr:nth-child(odd){
    background-color: red;
}

main>table>tbody>tr>td:nth-child(even){
    /* background-color:blue; */
}
main>table>tbody>tr>td{
    width: 425px;
    height: 50px;
}
#first{
    width: 33%;
}

main>table, 
main>table>tbody>tr>th, 
main>table>tbody>tr>td{
    border: black solid 4px;
    border-collapse: collapse;
    border-spacing: 0px;
}

footer {
    background-color: lightcyan;
}