<ul>
  <li>
    <input id="c1" type="checkbox">
    <label for="c1">Checkbox</label>
  </li>
  <li>
    <input id="c2" type="checkbox" checked>
    <label for="c2">Checkbox</label>
  </li>
  <li>
    <input id="r1" type="radio" name="radio" value="1">
    <label for="r1">Radio</label>
  </li>
  <li>
    <input id="r2" type="radio" name="radio" value="2" checked>
    <label for="r2">Radio</label>
  </li>
  <li>
    <input id="s1" type="checkbox" class="switch">
    <label for="s1">Switch</label>
  </li>
  <li>
    <input id="s2" type="checkbox" class="switch" checked>
    <label for="s2">Switch</label>
  </li>
</ul>

<ul>
  <li>
    <input id="c1d" type="checkbox" disabled>
    <label for="c1d">Checkbox</label>
  </li>
  <li>
    <input id="c2d" type="checkbox" checked disabled>
    <label for="c2d">Checkbox</label>
  </li>
  <li>
    <input id="r1d" type="radio" name="radiod" value="1" disabled>
    <label for="r1d">Radio</label>
  </li>
  <li>
    <input id="r2d" type="radio" name="radiod" value="2" checked disabled>
    <label for="r2d">Radio</label>
  </li>
  <li>
    <input id="s1d" type="checkbox" class="switch" disabled>
    <label for="s1d">Switch</label>
  </li>
  <li>
    <input id="s2d" type="checkbox" class="switch" checked disabled>
    <label for="s2d">Switch</label>
  </li>
</ul>

@supports(-webkit-appearance: none) or (-moz-appearance: none) {
  input[type='checkbox'],
  input[type='radio'] {
    --active: #275EFE;
    --active-inner: #fff;
    --focus: 2px rgba(39, 94, 254, .3);
    --border: #BBC1E1;
    --border-hover: #275EFE;
    --background: #fff;
    --disabled: #F6F8FF;
    --disabled-inner: #E1E6F9;
    -webkit-appearance: none;
    -moz-appearance: none;
    height: 21px;
    outline: none;
    display: inline-block;
    vertical-align: top;
    position: relative;
    margin: 0;
    cursor: pointer;
    border: 1px solid var(--bc, var(--border));
    background: var(--b, var(--background));
    transition: background .3s, border-color .3s, box-shadow .2s;
    &:after {
      content: '';
      display: block;
      left: 0;
      top: 0;
      position: absolute;
      transition: transform var(--d-t, .3s) var(--d-t-e, ease), opacity var(--d-o, .2s);
    }
    &:checked {
      --b: var(--active);
      --bc: var(--active);
      --d-o: .3s;
      --d-t: .6s;
      --d-t-e: cubic-bezier(.2, .85, .32, 1.2);
    }
    &:disabled {
      --b: var(--disabled);
      cursor: not-allowed;
      opacity: .9;
      &:checked {
        --b: var(--disabled-inner);
        --bc: var(--border);
      }
      & + label {
        cursor: not-allowed;
      }
    }
    &:hover {
      &:not(:checked) {
        &:not(:disabled) {
          --bc: var(--border-hover);
        }
      }
    }
    &:focus {
      box-shadow: 0 0 0 var(--focus);
    }
    &:not(.switch) {
      width: 21px;
      &:after {
        opacity: var(--o, 0);
      }
      &:checked {
        --o: 1;
      }
    }
    & + label {
      font-size: 14px;
      line-height: 21px;
      display: inline-block;
      vertical-align: top;
      cursor: pointer;
      margin-left: 4px;
    }
  }
  input[type='checkbox'] {
    &:not(.switch) {
      border-radius: 7px;
      &:after {
        width: 5px;
        height: 9px;
        border: 2px solid var(--active-inner);
        border-top: 0;
        border-left: 0;
        left: 7px;
        top: 4px;
        transform: rotate(var(--r, 20deg));
      }
      &:checked {
        --r: 43deg;
      }
    }
    &.switch {
      width: 38px;
      border-radius: 11px;
      &:after {
        left: 2px;
        top: 2px;
        border-radius: 50%;
        width: 15px;
        height: 15px;
        background: var(--ab, var(--border));
        transform: translateX(var(--x, 0));
      }
      &:checked {
        --ab: var(--active-inner);
        --x: 17px;
      }
      &:disabled {
        &:not(:checked) {
          &:after {
            opacity: .6;
          }
        }
      }
    }
  }
  input[type='radio'] {
    border-radius: 50%;
    &:after {
      width: 19px;
      height: 19px;
      border-radius: 50%;
      background: var(--active-inner);
      opacity: 0;
      transform: scale(var(--s, .7));
    }
    &:checked {
      --s: .5;
    }
  }
}

// Demo

ul {
  margin: 12px;
  padding: 0;
  list-style: none;
  width: 100%;
  max-width: 320px;
  li {
    margin: 16px 0;
    position: relative;
  }
}

html {
  box-sizing: border-box;
}

* {
  box-sizing: inherit;
  &:before,
  &:after {
    box-sizing: inherit;
  }
}

// Center & dribbble
body {
  min-height: 100vh;
  font-family: 'Inter', Arial, sans-serif;
  color: #8A91B4;
  display: flex;
  justify-content: center;
  align-items: center;
  background: #F6F8FF;
  @media(max-width: 800px) {
    padding: 20px;
  }
}

// Browser support https://caniuse.com/#feat=css-appearance