#paragraph::first-letter{
    color:blue;
    font-weight:bolder;
    font-size:25px;
}
#paragraph::first-line{
    color:blueviolet;
    font-weight:bold;
}
::selection {
    background-color:green;
    color:white;
}

.plus::after {
    content: "+ Plus"
}
.plus::before {
    content:"- Minus "
}