JSFiddle - React, Tailwind, and code Playground

by Sergey Goryachev

HTML

<div class="wrapper">
  <div class="circle"><span>1</span></div>
  <div class="circle"><span>2</span></div>
  <div class="circle"><span>3</span></div>
  <div class="circle"><span>6</span></div>
  <div class="circle"><span>5</span></div>
  <div class="circle"><span>4</span></div>
  <div class="circle"><span>7</span></div>
  <div class="circle"><span>8</span></div>
  <div class="circle"><span>9</span></div>
  <div class="circle"><span>12</span></div>
  <div class="circle"><span>11</span></div>
  <div class="circle"><span>10</span></div>
  <div class="circle"><span>13</span></div>
  <div class="circle"><span>14</span></div>
  <div class="circle"><span>15</span></div>
  <div class="circle"><span>18</span></div>
  <div class="circle"><span>17</span></div>
  <div class="circle"><span>16</span></div>
  <div class="circle"><span>19</span></div>
  <div class="circle"><span>20</span></div>
  <div class="circle"><span>21</span></div>
  <div class="clear"></div>
</div>

CSS

.clear {
  float: none;
  clear: both;
}
.wrapper {
  padding: 40px 40px 0 40px;
  background: rgb(5,171,224);
  background: -moz-linear-gradient(top,  rgba(5,171,224,1) 0%, rgba(83,203,241,1) 60%, rgba(135,224,253,1) 100%);
  background: -webkit-linear-gradient(top,  rgba(5,171,224,1) 0%,rgba(83,203,241,1) 60%,rgba(135,224,253,1) 100%);
  background: linear-gradient(to bottom,  rgba(5,171,224,1) 0%,rgba(83,203,241,1) 60%,rgba(135,224,253,1) 100%);
  filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#05abe0', endColorstr='#87e0fd',GradientType=0 );
}
.circle {
  width: 33.3333333%;
  float: left;
  position: relative;
}
.circle span {
  width: 80px;
  height: 80px;
  border: 1px solid #fff;
  line-height: 80px;
  text-align: center;
  font-size: 40px;
  color: #FFF;
  border-radius: 50%;
  margin: auto;
  margin-bottom: 40px;
  display: block;
}
.circle:after {
  content: '';
  position: absolute;
  width: calc(100% - 82px);
  height: 1px;
  background: #fff;
  transform: translateX(50%);
  right: 0;
  top: 41px;
}
.circle:nth-child(-6n+15):after {
  width: 1px;
  height: 40px;
  top: 82px;
  right: 50%;
}
.circle:nth-child(6n+6):after {
  display: none;
}