toggle-switch.css

/*Simple css to style toggle switch*/
.theme-switch-wrapper {
  display: flex;
  align-items: center;
}
span {
  margin-right: 0.5rem;
  font-size: 1rem;
  font-style: italic;
}
.theme-switch {
  display: inline-block;
  height: 28px;
  position: relative;
  width: 45px;
}

.theme-switch input {
  display: none;
}

.slider {
  background-color: #c8c8c8;
  bottom: 0;
  cursor: pointer;
  left: 0;
  position: absolute;
  right: 0;
  top: 0;
  transition: 0.4s;
}

.slider:before {
  background-color: #fff;
  bottom: 4px;
  content: '';
  height: 20px;
  left: 4px;
  position: absolute;
  transition: 0.4s;
  width: 20px;
}

input:checked + .slider {
  background-color: #62b283;
}

input:checked + .slider:before {
  transform: translateX(16px);
}

.slider.round {
  border-radius: 34px;
}

.slider.round:before {
  border-radius: 50%;
}