#main{background-color:var(--tg-theme-bg-color,#fff);display:flex;align-items:center;justify-content:center;height:100vh}#main,.app-container{color:var(--tg-theme-text-color,#000)}.app-container{text-align:center;font-family:Arial,sans-serif}.icon-container{margin-bottom:20px}.icon-container,.task-counter{display:flex;justify-content:center}button{font-family:Arial,sans-serif;font-size:16px;padding:10px 20px;border:none;border-radius:10px;background-color:var(--tg-theme-header-bg-color);color:var(--tg-theme-text-color);outline:none;cursor:pointer;transition:background-color .3s,box-shadow .3s;-webkit-user-select:none;-moz-user-select:none;user-select:none;box-shadow:0 5px 10px rgba(0,0,0,.1);transform:translateY(2px)}