Paste this to your Profile CSS for Activity Item glow effect:

.activity-item {
border:1px solid #ff5454;
animation:glow 1s ease-in-out infinite alternate
}

@-webkit-keyframes glow {
to {
box-shadow:0 0 10px #f00,0 0 20px #f00,0 0 30px #ff6600,0 0 40px #ff6600,0 0 50px #ff6600,0 0 60px #ff6600,0 0 70px #f60
}

from {
box-shadow:0 0 20px #f00,0 0 30px #7e2c2c,0 0 40px #7e2c2c,0 0 50px #7e2c2c,0 0 60px #7e2c2c,0 0 70px #7e2c2c,0 0 80px #7e2c2c
}
}