<input type="checkbox" class="checkbox" id="checkbox" />
<label for="checkbox">Красивый чекбокс))</label>

<input type="radio" class="radio" id="radio" />
<label for="radio">Еще более красивый радиобуттон</label>

/************* чекбокс *************/
.checkbox {
  position: relative;
  z-index: -1;
  opacity: 0;
  margin: 10px 0 0 20px;
}
.checkbox + label {
  position: relative;
  padding: 0 0 0 60px;
  cursor: pointer;
}
.checkbox + label:before {
  content: '';
  position: absolute;
  top: -4px;
  left: 0;
  width: 50px;
  height: 26px;
  border-radius: 13px;
  background: #CDD1DA;
  box-shadow: inset 0 2px 3px rgba(0,0,0,.2);
  transition: .2s;
}
.checkbox + label:after {
  content: '';
  position: absolute;
  top: -2px;
  left: 2px;
  width: 22px;
  height: 22px;
  border-radius: 10px;
  background: #FFF;
  box-shadow: 0 2px 5px rgba(0,0,0,.3);
  transition: .2s;
}
.checkbox:checked + label:before {
  background: #9FD468;
}
.checkbox:checked + label:after {
  left: 26px;
}
.checkbox:focus + label:before {
  box-shadow: inset 0 2px 3px rgba(0,0,0,.2), 0 0 0 3px rgba(255,255,0,.7);
}

/********** радиобуттон **********/
.radio {
  position: absolute;
  z-index: -1;
  opacity: 0;
  margin: 10px 0 0 7px;
}
.radio + label {
  position: relative;
  padding: 0 0 0 35px;
  cursor: pointer;
}
.radio + label:before {
  content: '';
  position: absolute;
  top: -3px;
  left: 0;
  width: 22px;
  height: 22px;
  border: 1px solid #CDD1DA;
  border-radius: 50%;
  background: #FFF;
}
.radio + label:after {
  content: '';
  position: absolute;
  top: 1px;
  left: 4px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #9FD468;
  box-shadow: inset 0 1px 1px rgba(0,0,0,.5);
  opacity: 0;
  transition: .2s;
}
.radio:checked + label:after {
  opacity: 1;
}
.radio:focus + label:before {
  box-shadow: 0 0 0 3px rgba(255,255,0,.7);
}