body{margin:0;font-family:sans-serif;display:flex;flex-direction:column;align-items:center;padding-top:20px;background:#f5f5f5}#mood-wrapper{position:relative;width:500px;height:500px;border:2px solid #000}#mood-image{width:100%;height:100%;display:block}#marker{position:absolute;width:14px;height:14px;background-color:red;border-radius:50%;transform:translate(-50%,-50%);display:none}button{margin-top:20px;padding:10px 20px;font-size:16px}#share-btn{margin-top:10px;padding:10px 20px;font-size:16px;display:none}@media screen and (max-width: 768px){#share-btn{display:inline-block}}