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CSS Base

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              ul
  li.item item1
  li.item item2
  li.item item3
  li.item item4
  li.item item5
  li.item item6
  li.item item7
.btn-group
  p Rotate 180 deg
  button.btn.ul Rotate UL
  button.btn.li Rotate LI
            
          
!
            
              body {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  margin: 0;
  * {
    transition: all 2s;
  }
}
ul {
  display: flex;
  flex-direction: column; 
  width: 300px;
  border: 15px solid pink;
  border-radius: 10px;
  padding: 25px;
  list-style: none;
  li {
    width: 100%;
    border-radius: 15px;
    padding: 5px 0;
    background: lightgreen;
    color: white;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    font-weight: 700;
    font-size: 22px;
    text-align: center;
    &:not(:last-child) {
      margin-bottom: 25px;
    }
  }
}

ul {
  &.rotate, & li.rotate {
    transform: rotate(180deg);
  }
}

.btn-group {
  position: absolute;
  top: 15px;
  left: 20px;
  p {
    margin: 0 0 20px 0;
    font-size: 20px;
    letter-spacing: 1px;
  }
  .btn {
    display: block;
    width: 100px;
    margin-bottom: 15px;
    border: none;
    border-radius: 5px;
    padding: 8px;
    background: #0080FF;
    color: white;
    font-size: 16px;
    letter-spacing: 1px;
    cursor: pointer;
    transition: .5s;
    &:hover {
      background: royalblue;
    }
  }
}
            
          
!
            
              $(document).ready(function(){
  $('.btn').click(function(e){
    if ($(this).hasClass('ul')) {
      $('ul').toggleClass('rotate');
      return;
    }
      $('li').toggleClass('rotate');
  });
});


            
          
!
999px
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