remove unused css file

src/styles/chain.css

-.circles {
-  position: relative;
-  margin: 50% auto;
-  width: var(--R);
-  height: var(--R);
-  font-size: 50px;
-}
-
-.circle {
-  position: absolute;
-  width: 8px;
-  height: 8px;
-  left: var(--x);
-  bottom: var(--y);
-  border-radius: 50%;
-  border: 2px solid #ffff00;
-  animation: flade 1s ease var(--ease) alternate infinite;
-}
-
-.font {
-  position: absolute;
-  margin: 25% 30%;
-  font-size: 40px;
-  font-style: initial;
-  color: #00BFFF;
-  -webkit-text-stroke: 2px #333;
-}
-
-@keyframes flade {
-  from {
-    opacity: 1;
-  }
-
-  to {
-    opacity: 0;
-  }
-}