@keyframes float {
    0% {
       /* box-shadow: 0 5px 15px 0px rgba(0, 0, 0, 0.6); */
        transform: translatey(0px);
   }
    50% {
       /* box-shadow: 0 25px 15px 0px rgba(0, 0, 0, 0.2); */
        transform: translatey(-20px);
   }
    100% {
        /* box-shadow: 0 5px 15px 0px rgba(0, 0, 0, 0.6); */
        transform: translatey(0px);
   }
}
.avatar {
    width: 150px;
    height: 150px;
    box-sizing: border-box;  /* Not needed */
  /*   
    border: 5px white solid;
    border-radius: 50%;
    */ 
background: transparent;
  overflow: hidden;
   /* box-shadow: 0 5px 15px 0px rgba(0, 0, 0, 0.6); */
    transform: translatey(0px);
    animation: float 6s ease-in-out infinite;
}
.avatar img {
    width: 100%;
    height: auto;
}