css

        .separator {
          position: relative;
          width: 3rem;
          height: 3rem;
          border: 0;
          margin: 0;
        }
        .separator::before,
        .separator::after {
          position: absolute;
          content: '';
          width: 1px;
          top: 0;
          bottom: 0;
          background-color: var(--color-default-text-muted);
        }
        .separator::before {
          left: 0;
          transform: skew(-45deg);
          transform-origin: left bottom;
        }
        .separator::after {
          right: 0;
          transform: skew(45deg);
          transform-origin: right bottom;
        }