1 .heart {

2 fill: red;

3 position: relative; top: 5px; width: 50px;

4 animation: pulse 1s ease infinite;

5 }

6 #heart {

7 position: relative; width: 100px; height: 90px;

8 text-align: center; font-size: 16px;

9}

10 @keyframes pulse {

11 0% {transform: scale(1);}

12 50% {transform: scale(1.3);}

13 100% {transform: scale(1);}

14 }