#muiCont hr.wp-block-separator {
    width: 100%;
    max-width: 100%;
    opacity:0.25;
    border-bottom-width: 0px;
  }

body #muiRight .widgets hr {
    height: 3px;
    margin-left:-60px;
    width: calc(100% + 60px);
    max-width: calc(100% + 60px);
    opacity:0.25;
    border-bottom-width: 0px;
}