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CSS

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HTML 

              
                <!-- 右邊工具列 -->

<main>
	<nav>
		<button class="material-icons">list</button>
		<button class="material-icons">insert_chart</button>
		<button class="material-icons">library_music</button>
		<p>POMODORO</p>
	</nav>
	<div id="input">
		<input id="new" type="text" placeholder="add a new mission…" />
		<i class="material-icons add">add</i>

    <!-- 		<i class="material-icons close">close</i> -->

  </div>
  
  <!--     左邊工具列 -->
  
	<div id="timer" class="todolist">
		<input type="checkbox" id="todo">
		<label for="todo">
			<span class="icons"> 
				<i class="material-icons unchecked">radio_button_unchecked</i>
				<i class="material-icons checked">radio_button_checked</i>
			</span>
			<div>
				<span>the First thing to do today</span>
				<div class="subTitle"></div>
			</div>
		</label>
		<time datetime="2019-07-10 20:00">
			<span id="mm">25</span>
			<span id="split" class="blink">:</span>
			<span id="ss">00</span>
		</time>
	</div>
	<div id="clock">
		<div>
			<button id="play_arrow" class="material-icons">play_arrow</button>
			<button id="stop" class="material-icons">stop</button>
		</div>
	</div>
	<ul id="todoList">
		<li class="todolist item">
			<input type="checkbox" id="todo1">
			<label for="todo1">
				<span class="icons"> 
					<i class="material-icons unchecked">radio_button_unchecked</i>
					<i class="material-icons checked">radio_button_checked</i>
				</span>
				<div>the second thing to do today</div>
			</label>
			<i class="material-icons">play_circle_outline</i>
		</li>
		<li class="todolist item">
			<input type="checkbox" id="todo2">
			<label for="todo2">
				<span class="icons"> 
					<i class="material-icons unchecked">radio_button_unchecked</i>
					<i class="material-icons checked">radio_button_checked</i>
				</span>
				<div>the third thing to do today</div>
			</label>
			<i class="material-icons">play_circle_outline</i>
		</li>
		<li class="todolist item">
			<input type="checkbox" id="todo3">
			<label for="todo3">
				<span class="icons"> 
					<i class="material-icons unchecked">radio_button_unchecked</i>
					<i class="material-icons checked">radio_button_checked</i>
				</span>
				<div>the forth thing to do today</div>
			</label>
			<i class="material-icons">play_circle_outline</i>
		</li>
		<div class="more">MORE</div>
	</ul>
</main>
!

CSS 

              
                $white: #fff
$pink: #ff4384
$blue: #003164

@media (min-width: 426px) and (max-width: 1280px)
  font-size: 14px

@media (max-width: 425px)
  font-size: 12px

*
  box-sizing: border-box
  padding: 0
  margin: 0
  text-transform: uppercase
  font-family: 'Roboto', sans-serif
::placeholder
  color: $pink

@keyframes blink
  from
    opacity: 1
  50%
    opacity: 0
  to
    opacity: 1

.blink
  animation: blink 1s infinite

html, body
  display: block
  width: 100%
  height: 100%

main
  position: relative
  display: block
  width: 100%
  height: 100%
  background: linear-gradient(to right, #FFEDF7 64.84375%, $blue 64.84375%)

.material-icons
  cursor: pointer

button
  background: transparent
  outline: none
  border-width: 0
  cursor: pointer

nav
  position: absolute
  right: 6%
  top: 6%
  display: flex
  justify-content: space-between
  align-items: center
  width: 2.25em
  height: calc(100% - 96px)
  -webkit-writing-mode: vertical-rl
  -ms-writing-mode: tb-rl
  writing-mode: vertical-rl
  button
    color: $white
    font-weight: 400
    line-height: 1.5
    flex: 0 0 auto
    width: 2.25em
    height: 2.25em
    color: $white
    vertical-align: middle
    text-align: left
    overflow: hidden
  p
    font-size: 1.5em
    color: $white
    font-weight: 700
    line-height: 1.5
    flex: 1 1 auto
    text-align: right

#clock
  position: absolute
  top: 50%
  -webkit-transform: translateY(-50%)
  transform: translateY(-50%)
  -webkit-transform: translateX(-50%) translateY(-50%)
  transform: translateX(-50%) translateY(-50%)
  left: 64.84375%
  display: block
  width: 42.1875%
  max-width: 540px
  min-width: 200px
  font-size: 0
  border: 4px solid $pink
  border-radius: 50%
  z-index: 1
  > div
    position: absolute
    top: 50%
    left: 50%
    -webkit-transform: translate(-50%, -50%)
    transform: translate(-50%, -50%)
  #play_arrow
    display: block
    width: 6rem
    height: 6rem
    font-size: 6rem
    color: $pink
    background-color: $white
    border-radius: 50%
  #stop
    position: absolute
    bottom: 0
    right: -1.5rem
    display: block
    width: 1.5rem
    height: 1.5rem
    font-size: 1.5rem
    color: $white
  &::before, &::after
    display: block
    content: '\200B'
    border-radius: 50%
  &::before
    width: 96%
    height: 96%
    position: absolute
    top: 50%
    left: 50%
    margin-top: -48%
    margin-left: -48%
    background-color: $pink
  &::after
    padding-bottom: 100%

@media (max-width: 425px)
  #clock
    top: 62.5%

.todolist
  input
    display: none
    ~ label
      .unchecked
        display: inline-block
      .checked
        display: none
    &:checked ~ label
      .unchecked
        display: none
      .checked
        display: inline-block
  label
    display: inline-flex
    text-transform: uppercase
  .subTitle
    display: block
    width: 0.75em
    height: 0.75em
    border: 1px solid $pink
    border-radius: 50%
    margin-top: 0.5em

#timer
  position: absolute
  top: 50%
  -webkit-transform: translateY(-50%)
  transform: translateY(-50%)
  left: 6.640625%
  color: $blue
  z-index: 2
  label
    font-size: 1.5em
    color: $blue
    font-weight: 700
    line-height: 1.16667
    text-shadow: 1px 1px 2px #FFEDF7
    .icons
      display: inline-block
      -webkit-user-select: none
      -moz-user-select: none
      -ms-user-select: none
      user-select: none
      font-size: 0
    .material-icons
      font-size: 3rem
      margin-right: 16px
  time
    display: block
    font-size: 0
    text-shadow: 1px 1px 2px #FFEDF7
    span
      font-size: 11rem
      color: $pink
      font-weight: 700
      line-height: 1

@media (max-width: 425px)
  #timer
    top: 37.5%

#input
  width: 41.40625%
  position: relative
  display: inline-block
  padding: 3rem 0 3rem 6.640625%
  #new
    font-size: 1rem
    color: $pink
    font-weight: 700
    line-height: 1.5
    width: 100%
    height: 7%
    border-width: 0
    padding: 1.1875em 2.5rem 1.125em 1em
    outline: none
  
  .material-icons
    position: absolute
    top: 3rem
    right: 0
    display: inline-block
    width: 1.5rem
    height: 1.5rem
    color: $pink
    font-size: 1.5rem
    overflow: hidden
    margin: 1rem 1rem 1rem 0

#todoList
  display: block
  width: 34.765625%
  position: absolute
  bottom: 6%
  left: 6.640625%
  li
    font-size: 1rem
    color: $blue
    font-weight: 700
    line-height: 1.5
    display: inline-flex
    width: 100%
    justify-content: space-between
    align-items: center
    height: 2rem
    line-height: 2rem
    overflow: hidden
    white-space: nowrap
    text-overflow: ellipsis
    border-bottom: 1px solid $blue
    label
      justify-content: flex-start
      align-items: center
      span
        display: inline-flex
        .material-icons
          margin-right: 0.25rem
      div
        overflow: hidden
        text-overflow: ellipsis
    &.item label
      width: calc(100% - 24px)
    .material-icons
      flex: 0 0 24px
      width: 24px
      height: 24px
  .more
    font-size: 1rem
    color: $pink
    font-weight: 700
    line-height: 1.1875
    display: block
    margin-top: 0.5625em
    color: #FF4384
    float: right
    cursor: pointer
!

JS
!
999px

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