header {
    background-color:darkseagreen;
    color: antiquewhite; 
    text-align: center;
}
/* "color:" is for font */

body {
    background-color: rgb(195, 231, 195);
    font-family: Georgia, 'Times New Roman', Times, serif;
    color: grey;
}

table, th, td {
    width: auto;
    margin-left: auto;
    margin-right: auto;
    border: 2px solid;
    /* border-collapse: collapse; (if you don't want doublt border)*/
}

thead {
    background-color: rgb(95, 138, 95);
    color: rgb(195, 231, 195);;
    text-align: center;
    padding-left: 10px;
    padding-right: 10px;
}

tbody {
    background-color: darkseagreen;
    color: darkslategray;
    padding-left: 10px; 
    padding-right: 7px;
    text-align: left;
}

footer {
    color: rgb(79, 117, 79)
}