base-style.css

.original-setting img {
  margin-top: 12px;
}
.window {
  width: 60%;
  height: 60%;
  border-radius: 4px;
  padding: 15px;
  background: #fff;
  position: fixed;
  bottom: -60%;
  left: calc(50% - 60%/2);
  box-shadow: 0 8px 10px 1px rgba(0, 0, 0, 0.14), 0 3px 14px 2px rgba(0, 0, 0, 0.12), 0 5px 5px -3px rgba(0, 0, 0, 0.4);
  visibility: hidden;
  transition: .3s;
  opacity: 0;
  z-index: 999999999999;
}
.blur {
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.12);
  position: fixed;
  top: 0;
  left: 0;
  visibility: hidden;
  transition: .3s;
  opacity: 0;
  z-index: 99999;
}
.open {
  visibility: visible;
  opacity: 1;
}
.open.window {
  bottom: calc(50% - 60%/2);
}

.GoogleSwitch {
  visibility : hidden;
  width: 37px;
  position: relative;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}
.GoogleSwitch:before {
  content: "";
  height: 14px;
  width: 37px;
  margin: 0 auto;
  background: #b9b9b9;
  border-radius: 7px;
  display: block;
  visibility : visible;
  transition: .1s;
  z-index: 0;
}
.GoogleSwitch:after {
  content: "";
  height: 20px;
  width: 20px;
  background: #fafafa;
  border-radius: 50%;
  box-shadow: 0 1px 3px rgba(0,0,0,.4);
  display: block;
  visibility : visible;
  transition: .2s;
  position: absolute;
  top: -3px;
  left: 0;
  z-index: 1;
}
.GoogleSwitch:checked:before {
  background: rgba(66,133,244,.5);
}
.GoogleSwitch:checked:after {
  background: #4285f4;
  left: 17px;
}