.wp-block-separator {
  border-top: 0 !important;
  border-bottom: 0 !important;
  opacity: 1;
    margin-left:auto!important;
    margin-right:auto!important;
}

.wp-block-separator, .wp-block-separator.is-style-default {
  max-width: 720px;
  width:100%;
}

.wp-block-separator.is-style-wide {
  max-width: 1040px;
  width:100%;
}

.wp-block-separator.alignfull {
  max-width: none;
  width: calc(100% + 30px);
}

@media (min-width: 1400px) {
    .wp-block-separator.is-style-wide {
        max-width: 1200px;
        width:100%;
    }
    .wp-block-separator.alignfull {
        max-width: none;
        width: calc(100% + 30px);
    }
}