.drop-card{
   position:relative;
   transition:0.3s;
   border:2px solid #eee;
   border-radius:15px;
}

.flash{
   animation: flashDrop 1s linear 3;
}

@keyframes flashDrop{
   0%{background:#e6ffe6;}
   50%{background:#b7ffb7;}
   100%{background:#fff;}
}

.watch-btn{
   position:absolute;
   top:10px;
   right:10px;
   border-radius:50px;
   padding:6px 12px;
   border:none;
   background:#eee;
   cursor:pointer;
}

.watch-btn.active{
   background:#42c700;
   color:#fff;
}