小编Tim*_*m R的帖子

body {
  font-family: sans-serif;
  background-color: black;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.button {
  position: relative;
  width: 200px;
  height: 40px;
  background-color: #083a65;
  border: none;
  color: white;
  font-size: 18px;
  border-radius: 10px;
}

.button::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 0;
  height: 0;
  border-radius: 10px;
  border-top: 1px solid yellow;
  border-right: 1px solid yellow;
  animation: border-top-right-animation 2s infinite;
}

.button::after {
  content: "";
  position: absolute;
  right: 0px;
  bottom: 0px;
  width: 0;
  height: 0;
  border-radius: …