.hr-third {
  width: 33.33%;    /* 1/3 of the screen width */
  height: 2px;      /* Thickness of the line */
  background-color: #000; /* Color of the line */
  margin-left: 0;   /* Align to the left */
  margin-right: 0;  /* Prevent extra margin on the right */
  border: none;     /* Ensure no default border is applied */
}