.wp-block-separator.has-css-opacity{
opacity:.4;
}
.wp-block-separator{
border:none;
border-bottom:2px solid;
margin-left:auto;
margin-right:auto;
}
.wp-block-separator.has-alpha-channel-opacity{
opacity:1;
}
.wp-block-separator:not(.is-style-wide):not(.is-style-dots){
width:100px;
}
.wp-block-separator.has-background:not(.is-style-dots){
border-bottom:none;
height:1px;
}
.wp-block-separator.has-background:not(.is-style-wide):not(.is-style-dots){
height:2px;
}
All system for education purposes only. For more tools: Telegram @jackleet