#main-header{box-shadow:none}.calendar{background-color:#fff;box-shadow:0 0 10px rgba(0,0,0,0.1);width:100%}.header{display:flex;justify-content:space-between;align-items:center;padding:10px;background-color:#1b3022;color:#fff}.days{display:flex;justify-content:space-around;background-color:#ecf0f1;font-weight:bold;position:relative}.day{flex:1;padding:10px;text-align:center;border-bottom:1px solid #bdc3c7;cursor:pointer}.day:hover{background-color:#e0e0e0;pointer-events:none}.day.selected::before{content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:24px;height:24px;background-color:#3498db;border-radius:50%;z-index:-1}#calendarGrid>.day.selected{background-color:#3498db}#resultParagraph{text-align:center;margin-top:25px;font-weight:bold}