:root {
  /* larger checkbox */
}
:root label.checkbox-bootstrap input[type=checkbox] {
  /* hide original check box */
  opacity: 0;
  position: absolute;
  /* find the nearest span with checkbox-placeholder class and draw custom checkbox */
  /* draw checkmark before the span placeholder when original hidden input is checked */
  /* disabled checkbox style */
  /* disabled and checked checkbox style */
  /* when the checkbox is focused with tab key show dots arround */
}
:root label.checkbox-bootstrap input[type=checkbox] + span.checkbox-placeholder {
  width: 14px;
  height: 14px;
  border: 1px solid;
  border-radius: 3px;
  /*checkbox border color*/
  border-color: #737373;
  display: inline-block;
  cursor: pointer;
  margin: 0 7px 0 -20px;
  vertical-align: middle;
  text-align: center;
}
:root label.checkbox-bootstrap input[type=checkbox]:checked + span.checkbox-placeholder {
  background: #0ccce4;
}
:root label.checkbox-bootstrap input[type=checkbox]:checked + span.checkbox-placeholder:before {
  display: inline-block;
  position: relative;
  vertical-align: text-top;
  width: 5px;
  height: 9px;
  /*checkmark arrow color*/
  border: solid white;
  border-width: 0 2px 2px 0;
  /*can be done with post css autoprefixer*/
  -webkit-transform: rotate(45deg);
  -moz-transform: rotate(45deg);
  -ms-transform: rotate(45deg);
  -o-transform: rotate(45deg);
  transform: rotate(45deg);
  content: "";
}
:root label.checkbox-bootstrap input[type=checkbox]:disabled + span.checkbox-placeholder {
  background: #ececec;
  border-color: #c3c2c2;
}
:root label.checkbox-bootstrap input[type=checkbox]:checked:disabled + span.checkbox-placeholder {
  background: #d6d6d6;
  border-color: #bdbdbd;
}
:root label.checkbox-bootstrap input[type=checkbox]:focus:not(:hover) + span.checkbox-placeholder {
  outline: 1px dotted black;
}
:root label.checkbox-bootstrap.checkbox-lg input[type=checkbox] + span.checkbox-placeholder {
  width: 26px;
  height: 26px;
  border: 2px solid;
  border-radius: 5px;
  /*checkbox border color*/
  border-color: #737373;
}
:root label.checkbox-bootstrap.checkbox-lg input[type=checkbox]:checked + span.checkbox-placeholder:before {
  width: 9px;
  height: 15px;
  /*checkmark arrow color*/
  border: solid white;
  border-width: 0 3px 3px 0;
}

:root label.checkbox-bootstrap.checkbox-color2 input[type=checkbox]:checked + span.checkbox-placeholder {
  background: #1a6ecc;
}