<link href="https://fonts.googleapis.com/css2?family=Dancing+Script&display=swap" rel="stylesheet">
<div class="btn">
  <div class="bg"></div>
  <span class="noselect">Close the blinds</span>
  <div class="string"></div>
  <div class="string-end"></div>
  <div class="blind" id="b1"></div>
  <div class="blind" id="b2"></div>
  <div class="blind" id="b3"></div>
  <div class="blind" id="b4"></div>
  <div class="blind" id="b5"></div>
  <div class="blind" id="b6"></div>
  <div class="blind" id="b7"></div>
  <div class="blind" id="b8"></div>
  <div class="blind" id="b9"></div>
  <div class="blind" id="b10"></div>
  <div class="blind" id="b11"></div>
  <div class="blind" id="b12"></div>
  <div class="blind" id="b13"></div>
  <div class="blind" id="b14"></div>
  <div class="blind" id="b15"></div>
  <div class="blind" id="b16"></div>
</div>

* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
}

body {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.bg {
  position: absolute;
  width: 100vw;
  height: 100vh;
  background-color: #d99058;
  background-image: linear-gradient(315deg, #d99058 0%, #f8de7e 74%);
  z-index: -1;
  transition: 850ms;
}

.btn {
  width: 160px;
  height: 50px;
  position: relative;
  -webkit-tap-highlight-color: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Dancing Script', cursive;
  font-size: 25px;
  color: #fff;
  cursor: pointer;
  background-color: #63a4ff;
  background-image: linear-gradient(315deg, #63a4ff 0%, #83eaf1 74%);
}

.blind {
  position: absolute;
  width: 10px;
  height: 0px;
  background-color: #ffffff;
  background-image: linear-gradient(315deg, #ffffff 0%, #d7e1ec 74%);
  top: 0;
}

.string {
  width: 5px;
  height: 80px;
  border-radius: 0 5px 0 0;
  background: #eee;
  position: absolute;
  right: -5px;
  top: 0;
  transition: 850ms;
}

.string-end {
  width: 8px;
  height: 12px;
  border-radius: 0 0 10px 10px;
  background: #ccc;
  position: absolute;
  right: -6.5px;
  bottom: -42px;
  transition: 850ms;
}

.btn:hover .blind {
  height: 50px;
}

.btn:hover .bg {
  filter: invert(100%) brightness(20%);
}

.btn:hover .string {
  height: 60px;
}

.btn:hover .string-end {
  bottom: -22px;
}

.noselect {
  -webkit-touch-callout: none;
    -webkit-user-select: none;
     -khtml-user-select: none;
       -moz-user-select: none;
        -ms-user-select: none;
            user-select: none;
}

#b1 {
  left: 0;
  transition: 100ms;
}

#b2 {
  left: 10px;
  transition: 150ms;
}

#b3 {
  left: 20px;
  transition: 200ms;
}

#b4 {
  left: 30px;
  transition: 250ms;
}

#b5 {
  left: 40px;
  transition: 300ms;
}

#b6 {
  left: 50px;
  transition: 350ms;
}

#b7 {
  left: 60px;
  transition: 400ms;
}

#b8 {
  left: 70px;
  transition: 450ms;
}

#b9 {
  left: 80px;
  transition: 500ms;
}

#b10 {
  left: 90px;
  transition: 550ms;
}

#b11 {
  left: 100px;
  transition: 600ms;
}

#b12 {
  left: 110px;
  transition: 650ms;
}

#b13 {
  left: 120px;
  transition: 700ms;
}

#b14 {
  left: 130px;
  transition: 750ms;
}

#b15 {
  left: 140px;
  transition: 800ms;
}

#b16 {
  left: 150px;
  transition: 850ms;
}