Card by Dalyn-Liu

1.one-div {
2  width: 50px;
3  height: 50px;
4  background: #1abc9c;
5  border-radius: 30% 70% 63% 37% / 30% 30% 70% 70%;
6  margin-right: 15px;
7  animation: logo 1.2s infinite alternate;
8  box-shadow: 0 0 10px #1abc9c;
9}
10
11@keyframes logo {
12  100% {
13    transform: scale(1.2);
14    border-radius: 67% 33% 37% 63% / 29% 60% 40% 71%;
15  }
16}