doc {
    border: 2px solid red ;
}

doc * {
    margin-bottom : 10px;
    border-width: 1px;
}

border-standard {
    display: block ;
    border-top: 10px solid blue;
}

border-extras {
     display: block ;
     border-top-width: 10px;
     border-top-style: solid;
     border-top-color: red;
}