.snowflake{
    position:fixed;
    top:-10px;
    color:white;
    font-size:18px;
    pointer-events:none;
    animation:fall linear infinite;
}
@keyframes fall{
    0%{transform:translateY(-10vh);}
    100%{transform:translateY(110vh);}
}
#winter-garland {
    width:100%;
    position:fixed;
    top:0;
    left:0;
    display:flex;
    justify-content:space-between;
    padding:5px;
    pointer-events:none;
    z-index:9999;
}
.bulb {
    width:14px;
    height:14px;
    border-radius:50%;
    background:red;
    animation:blink 1s infinite;
}
@keyframes blink {
    0%{opacity:1;}
    50%{opacity:.3;}
    100%{opacity:1;}
}