selector: {
  /*declaration */
  /* Property: value; */
}

body {
  background-color: #53f4ea;
}

h1 {
  background-color: yellow;
    Font-family: 'Sevillana' ,cursive;
text-decoration: underline;

/*
how to target an id:
#id=name
IDs are unique; there should be one per page
/*
#headerOne {