$primary-color:royalblue;
$first-letter-size:72pt;
$shadow:15px 10px 50px 1px rgb(103, 82, 78);

@mixin box($border_color){
    border: 5px $border_color dotted;
    padding:3px;
    background: linear-gradient($primary-color, #43444b);
    color:white;
    box-shadow: $shadow;
}

#wrapper{
   
    .page-header{
        color:$primary-color;
        @include box(yellow);

    }
    p:first-of-type::first-line{
        font-style: italic;
        color:red;
    }

    p.last::first-letter{
        color:royalblue;
        font-size:$first-letter-size;
        font-family: cursive;
    }
}