.wp-block-quote{
border-left:.25em solid;
margin:0 0 1.75em;
padding-left:1em;
}
.wp-block-quote cite,.wp-block-quote footer{
color:currentColor;
font-size:.8125em;
font-style:normal;
position:relative;
}
.wp-block-quote:where(.has-text-align-right){
border-left:none;
border-right:.25em solid;
padding-left:0;
padding-right:1em;
}
.wp-block-quote:where(.has-text-align-center){
border:none;
padding-left:0;
}
.wp-block-quote.is-large,.wp-block-quote.is-style-large,.wp-block-quote:where(.is-style-plain){
border:none;
}
All system for education purposes only. For more tools: Telegram @jackleet