src/options/styles.css
@import url(https://fonts.googleapis.com/css?family=Roboto:300,500);

* {
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  box-sizing: border-box;
}

body {
  min-width: 280px;
  min-height: 280px;
  padding: 0;
  margin: 0;
  background: #f1f1f1;
}

.logo {
  display: flex;
  padding: 8px;
  align-items: center;
}

img {
  height: 69px;
  width: 69px;
  margin-right: 8px;
}

h1 {
  font-size: 28px;
  font-weight: 300;
  overflow-wrap: break-word;
}

.settingֲ  {
  transition: background-color 150ms cubic-bezier(0.4, 0, 0.2, 1) 0ms;
}

.setting:hover {
  background-color: rgba(0, 0, 0, 0.08);
}

.switch-input {
  display: none;
}
.switch-label {
  font-size: 14px;
  position: relative;
  display: block;
  min-width: 112px;
  cursor: pointer;
  font-weight: 500;
  text-align: left;
  padding: 16px 0 16px 44px;
  margin-left: 14px;
  user-select: none;
}

.switch-label:before,
.switch-label:after {
  content: "";
  position: absolute;
  margin: 0;
  outline: 0;
  top: 50%;
  -ms-transform: translate(0, -50%);
  -webkit-transform: translate(0, -50%);
  transform: translate(0, -50%);
  -webkit-transition: all 0.3s ease;
  transition: all 0.3s ease;
}
.switch-label:before {
  left: 1px;
  width: 34px;
  height: 14px;
  background-color: #9e9e9e;
  border-radius: 8px;
}
.switch-label:after {
  left: 0;
  width: 20px;
  height: 20px;
  background-color: #fafafa;
  border-radius: 50%;
  box-shadow: 0 3px 1px -2px rgba(0, 0, 0, 0.14),
    0 2px 2px 0 rgba(0, 0, 0, 0.098), 0 1px 5px 0 rgba(0, 0, 0, 0.084);
}
.switch-label .toggle--on {
  display: none;
}
.switch-label .toggle--off {
  display: inline-block;
}
.switch-input:checked + .switch-label:before {
  background-color: #a5d6a7;
}
.switch-input:checked + .switch-label:after {
  background-color: #4caf50;
  -ms-transform: translate(80%, -50%);
  -webkit-transform: translate(80%, -50%);
  transform: translate(80%, -50%);
}
.switch-input:checked + .switch-label .toggle--on {
  display: inline-block;
}
.switch-input:checked + .switch-label .toggle--off {
  display: none;
}

hr {
  border-top: 1px solid #ccc;
}

.teaser {
  display: block;
  height: 100px;
  width: 100%;
  background: #f1f1f1;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: black;
  font-size: 1.2rem;
  transition: background-color 150ms cubic-bezier(0.4, 0, 0.2, 1) 0ms;
}

.teaser:hover {
  background-color: rgba(0, 0, 0, 0.08);
}