body {
 margin: 25px;
 background-color: rgb(240,240,240);
 font-family: arial, sans-serif;
 font-size: 14px;
}

h1 {
 font-size: 35px;
 font-weight: normal;
 margin-top: 5px;
}

.someclass { color: red; }

#someid { color: green; }