style.css

body {
 font-family: sans-serif;
 background-color: #f0f0f0;
}

h1 {
 font-size: 36px;
}

ul, ol {
 padding: 0;
 margin: 0;
 list-style: none;
}

li {
 padding: 10px;
 margin: 10px;
 background-color: #fff;
 -webkit-box-shadow: 0 0 6px rgba(0, 0, 0, 0.4);
          box-shadow: 0 0 6px rgba(0, 0, 0, 0.4);
}

.container {
 background-color: #f0f0f0;
 padding: 20px;
 margin: 20px;
}

.progressbox {
 background-color: #fff;
 margin: 20px;
 padding: 20px;
}

.progressBar {
 height: 100%;
 background-color: #f0f0f0;
 -webkit-box-shadow: 0 0 6px rgba(0, 0, 0, 0.4);
          box-shadow: 0 0 6px rgba(0, 0, 0, 0.4);
}

.progressBox {
 position: absolute;
 top: 50%;
 left: 50%;
 transform: translate(-50%, -50%);
 width: 200px;
 height: 200px;
 background-color: #fff;
 -webkit-box-shadow: 0 0 6px rgba(0, 0, 0, 0.4);
          box-shadow: 0 0 6px rgba(0, 0, 0, 0.4);
}

.progressbar {
 position: relative;
 width: 200px;
 height: 20px;
 background-color: #fff;
 border-radius: 5px;
 -webkit-box-shadow: 0 0 6px rgba(0, 0, 0, 0.4);
          box-shadow: 0 0 6px rgba(0, 0, 0, 0.4);
}

.progress-value {
 position: absolute;
 top: 50%;
 left: 50%;
 transform: translate(-50%, -50%);
 font-size: 16px;
 font-weight: bold;
 color: #fff;
 background-color: #f0f0f0;
 -webkit-box-shadow: 0 0 6px rgba(0, 0, 0, 0.4);
          box-shadow: 0 0 6px rgba(0, 0, 0, 0.4);
}

.completed-message {
 position: absolute;
 top: 50%;
 left: 50%;
 transform: translate(-50%, -50%);
 font-size: 32px;
 font-weight: bold;
 color: #fff;
 background-color: #009900;
 -webkit-box-shadow: 0 0 6px rgba(0, 0, 0, 0.4);
          box-shadow: 0 0 6px rgba(0, 0, 0, 0.4);
}