<div class="wrapper">
  <div class="block">10</div>
  <div class="block">11</div>
  <div class="block">12</div>
  <div class="block">13</div>
  <div class="block">14</div>
  <div class="block">15</div>
  <div class="block">16</div>
  <div class="block">17</div>
  <div class="block">18</div>
  <div class="block">19</div>
  <div class="block">20</div>
  <div class="block">21</div>
  <div class="block">22</div>
</div>

.wrapper {
  display: flex;
  flex-flow: column wrap;
  width: 100vh;
  max-height: 70vh;
  height: 70vh;
  outline: 2px solid red;
  padding: 1%;
  box-sizing: border-box;
}
.block {
  flex-basis: 30%;
  border: 2px solid black;
  margin: 1%;
  box-sizing: border-box;
}
.block:first-child {
  flex-basis: 96%;
}
.block:hover {
  transform: scale3d(1.2,1.2,1.2);
}
.block:first-child:hover {
  transform: scale3d(1.2,1,1.2);
}


.block {
  display: flex;
  justify-content: center;
  align-items: center;
  transition-duration: .3s;
  font-size: 3vw;
  border-radius: 5px;
}

body {
  filter: blur(0.75px);
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0;
  height: 100vh;
  animation-name: MOVE-BG;
  animation-duration: 100s;
  animation-timing-function: linear;
  animation-iteration-count: infinite;
  background-image: url('data:image/svg+xml,%3Csvg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 56 28" width="56" height="28"%3E%3Cpath fill="%239C92AC" fill-opacity="0.15" d="M56 26v2h-7.75c2.3-1.27 4.94-2 7.75-2zm-26 2a2 2 0 1 0-4 0h-4.09A25.98 25.98 0 0 0 0 16v-2c.67 0 1.34.02 2 .07V14a2 2 0 0 0-2-2v-2a4 4 0 0 1 3.98 3.6 28.09 28.09 0 0 1 2.8-3.86A8 8 0 0 0 0 6V4a9.99 9.99 0 0 1 8.17 4.23c.94-.95 1.96-1.83 3.03-2.63A13.98 13.98 0 0 0 0 0h7.75c2 1.1 3.73 2.63 5.1 4.45 1.12-.72 2.3-1.37 3.53-1.93A20.1 20.1 0 0 0 14.28 0h2.7c.45.56.88 1.14 1.29 1.74 1.3-.48 2.63-.87 4-1.15-.11-.2-.23-.4-.36-.59H26v.07a28.4 28.4 0 0 1 4 0V0h4.09l-.37.59c1.38.28 2.72.67 4.01 1.15.4-.6.84-1.18 1.3-1.74h2.69a20.1 20.1 0 0 0-2.1 2.52c1.23.56 2.41 1.2 3.54 1.93A16.08 16.08 0 0 1 48.25 0H56c-4.58 0-8.65 2.2-11.2 5.6 1.07.8 2.09 1.68 3.03 2.63A9.99 9.99 0 0 1 56 4v2a8 8 0 0 0-6.77 3.74c1.03 1.2 1.97 2.5 2.79 3.86A4 4 0 0 1 56 10v2a2 2 0 0 0-2 2.07 28.4 28.4 0 0 1 2-.07v2c-9.2 0-17.3 4.78-21.91 12H30zM7.75 28H0v-2c2.81 0 5.46.73 7.75 2zM56 20v2c-5.6 0-10.65 2.3-14.28 6h-2.7c4.04-4.89 10.15-8 16.98-8zm-39.03 8h-2.69C10.65 24.3 5.6 22 0 22v-2c6.83 0 12.94 3.11 16.97 8zm15.01-.4a28.09 28.09 0 0 1 2.8-3.86 8 8 0 0 0-13.55 0c1.03 1.2 1.97 2.5 2.79 3.86a4 4 0 0 1 7.96 0zm14.29-11.86c1.3-.48 2.63-.87 4-1.15a25.99 25.99 0 0 0-44.55 0c1.38.28 2.72.67 4.01 1.15a21.98 21.98 0 0 1 36.54 0zm-5.43 2.71c1.13-.72 2.3-1.37 3.54-1.93a19.98 19.98 0 0 0-32.76 0c1.23.56 2.41 1.2 3.54 1.93a15.98 15.98 0 0 1 25.68 0zm-4.67 3.78c.94-.95 1.96-1.83 3.03-2.63a13.98 13.98 0 0 0-22.4 0c1.07.8 2.09 1.68 3.03 2.63a9.99 9.99 0 0 1 16.34 0z"%3E%3C/path%3E%3C/svg%3E');
}



@keyframes MOVE-BG {
   from {
     background-position: 0 0;
   }
   to { 
     background-position: 100% 0;
   }
}