SemanSemantic-UItic-UI/build/minified/modules/checkbox.min.css

.ui.checkbox {
  position: relative;
  display: inline-block;
  min-width: 1em;
  height: 1.25em;
  line-height: 1em;
  outline: 0;
  vertical-align: middle;
}

.ui.checkbox input {
  position: absolute;
  top: 0;
  left: 0;
  opacity: 0;
  outline: 0;
}

.ui.checkbox .box,
.ui.checkbox label {
  cursor: pointer;
  padding-left: 2em;
  outline: 0;
}

.ui.checkbox .box:before,
.ui.checkbox label:before {
  position: absolute;
  top: 0;
  line-height: 1;
  width: 1em;
  height: 1em;
  left: 0;
  content: '';
  border-radius: 4px;
  background: #FFF;
  -webkit-transition: background-color .3s ease,box-shadow .3s ease;
  transition: background-color .3s ease,box-shadow .3s ease;
  box-shadow: 0 0 0 1px rgba(0,0,0,.2);
}

.ui.checkbox .box:after,
.ui.checkbox label:after {
  -ms-filter: "alpha(Opacity=0)";
  filter: alpha(opacity=0);
  opacity: 0;
  content: '';
  position: absolute;
  background: transparent;
  border: .2em solid #333;
  border-top: 0;
  border-right: 0;
  -webkit-transform: rotate(-45deg);
  -ms-transform: rotate(-45deg);
  transform: rotate(-45deg);
}

.ui.checkbox .box:after,
.ui.checkbox label:after {
  top: .275em;
  left: .2em;
  width: .45em;
  height: .15em;
}

.ui.checkbox label {
  color: rgba(0,0,0,.6);
  -webkit-transition: color .2s ease;
  transition: color .2s ease;
}

.ui.checkbox label:hover {
  color: rgba(0,0,0,.8);
}

.ui.checkbox input:focus+label {
  color: rgba(0,0,0,.8);
}

.ui.checkbox+label {
  cursor: pointer;
  opacity: .85;
  vertical-align: middle;
}

.ui.checkbox+label:hover {
  opacity: 1;
}

.ui.checkbox .box:hover::before,
.ui.checkbox label:hover::before {
  box-shadow: 0 0 0 1px rgba(0,0,0,.3);
}

.ui.checkbox .box:active::before,
.ui.checkbox label:active::before {
  background-color: #F5F5F5;
}

.ui.checkbox input:focus+.box:before,
.ui.checkbox input:focus+label:before {
  box-shadow: 0 0 0 1px rgba(0,0,0,.3);
}

.ui.checkbox input:checked+.box:after,
.ui.checkbox input:checked+label:after {
  -ms-filter: "alpha(Opacity=100)";
  filter: alpha(opacity=100);
  opacity: 1;
}

.ui.disabled.checkbox+.box:after,
.ui.checkbox input[disabled]+.box:after,
.ui.disabled.checkbox label,
.ui.checkbox input[disabled]+label {
  opacity: .4;
  color: rgba(0,0,0,.3);
}

.ui.radio.checkbox .box:before,
.ui.radio.checkbox label:before {
  min-width: 1em;
  height: 1em;
  border-radius: 500px;
}

.ui.radio.checkbox .box:after,
.ui.radio.checkbox label:after {
  border: 0;
  top: .2em;
  left: .2em;
  width: .6em;
  height: .6em;
  background-color: #555;
  -webkit-transform: none;
  -ms-transform: none;
  transform: none;
  border-radius: 500px;
}

.ui.slider.checkbox {
  cursor: pointer;
  min-width: 3em;
}

.ui.slider.checkbox:after {
  position: absolute;
  top: .5em;
  left: 0;
  content: '';
  width: 3em;
  height: 2px;
  background-color: rgba(0,0,0,.1);
}

.ui.slider.checkbox .box,
.ui.slider.checkbox label {
  padding-left: 4em;
}

.ui.slider.checkbox .box:before,
.ui.slider.checkbox label:before {
  cursor: pointer;
  display: block;
  position: absolute;
  top: -.25em;
  left: 0;
  z-index: 1;
  width: 1.5em;
  height: 1.5em;
  box-shadow: 0 0 0 1px rgba(0,0,0,.1) inset;
  border-radius: 50rem;
  -webkit-transition: left .3s ease 0s;
  transition: left .3s ease 0s;
}

.ui.slider.checkbox .box:after,
.ui.slider.checkbox label:after {
  opacity: 1;
  position: absolute;
  content: '';
  top: .15em;
  left: 0;
  z-index: 2;
  margin-left: .375em;
  border: 0;
  width: .75em;
  height: .75em;
  border-radius: 50rem;
  -webkit-transform: none;
  -ms-transform: none;
  transform: none;
  -webkit-transition: background .3s ease 0s,left .3s ease 0s;
  transition: background .3s ease 0s,left .3s ease 0s;
}

.ui.slider.checkbox input:checked+.box:before,
.ui.slider.checkbox input:checked+label:before,
.ui.slider.checkbox input:checked+.box:after,
.ui.slider.checkbox input:checked+label:after {
  left: 1.75em;
}

.ui.slider.checkbox .box:after,
.ui.slider.checkbox label:after {
  background-color: #D95C5C;
}

.ui.slider.checkbox input:checked+.box:after,
.ui.slider.checkbox input:checked+label:after {
  background-color: #89B84C;
}

.ui.toggle.checkbox {
  cursor: pointer;
}

.ui.toggle.checkbox .box,
.ui.toggle.checkbox label {
  padding-left: 4em;
}

.ui.toggle.checkbox .box:before,
.ui.toggle.checkbox label:before {
  cursor: pointer;
  display: block;
  position: absolute;
  content: '';
  top: -.25em;
  left: 0;
  z-index: 1;
  background-color: #FFF;
  width: 3em;
  height: 1.5em;
  box-shadow: 0 0 0 1px rgba(0,0,0,.1) inset;
  border-radius: 50rem;
}

.ui.toggle.checkbox .box:after,
.ui.toggle.checkbox label:after {
  opacity: 1;
  background-color: transparent;
  box-shadow: none;
  content: '';
  position: absolute;
  top: .15em;
  left: .5em;
  z-index: 2;
  border: 0;
  width: .75em;
  height: .75em;
  background-color: #D95C5C;
  border-radius: 50rem;
  -webkit-transition: background .3s ease 0s,left .3s ease 0s;
  transition: background .3s ease 0s,left .3s ease 0s;
}

.ui.toggle.checkbox:active .box:before,
.ui.toggle.checkbox:active label:before {
  background-color: #F5F5F5;
}

.ui.toggle.checkbox input:checked+.box:after,
.ui.toggle.checkbox input:checked+label:after {
  left: 1.75em;
  background-color: #89B84C;
}

.ui.checkbox {
  font-size: 1em;
}

.ui.large.checkbox {
  font-size: 1.25em;
}

.ui.huge.checkbox {
  font-size: 1.5em;
}