/* Center the heart on the page */
.heart-container {
margin: 120px auto 0;
padding: 0;
display: flex;
justify-content: center;
align-items: center;
min-height: 30px;
}

/* The pulsing heart */
.heart {
width: 100px;
height: 100px;
background: #f10044;
position: relative;
transform: rotate(-45deg);
box-shadow: -10px 10px 90px #f10044;
animation: heart 1.5s linear infinite;
}

/* The keyframe animation for the heart */
@keyframes heart {
0% {
    transform: rotate(-45deg) scale(0.8);
}
50% {
    transform: rotate(-45deg) scale(1);
}
100% {
    transform: rotate(-45deg) scale(0.8);
}
}

/* The left half of the heart */
.heart:before {
content: '';
position: absolute;
width: 100px;
height: 100px;
background: #f10044;
top: -55%;
border-radius: 50px;
box-shadow: -10px 10px 90px #f10044;
}

/* The right half of the heart */
.heart:after {
content: '';
position: absolute;
width: 100px;
height: 100px;
background: #f10044;
right: -55%;
border-radius: 50px;
box-shadow: 10px 10px 90px #f10044;
}