style.css

        * {
            padding: 0;
            margin: 0;
        }

        body {
            height: 800px;
            background-color: rgba(131, 131, 130, 0.452);
        }

        ol, li{
            list-style: none;
        }

        .header {
            height: 50px;
            background-color: #000;
            color: #fff;
            margin-bottom: 20px;
        }

        .form {
            margin: 0 auto;
            min-width: 100px;
            max-width: 600px;
            position: relative;
            line-height: 50px;
            
        }

        .form label {
            float: left;
            cursor: pointer;
            font-size: 24px;
            font-family:'Lucida Sans', 'Lucida Sans Regular', 'Lucida Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif
        }

        .form input{
            float: right;
            height: 26px;
            margin-top: 12px;
            border: none;
            width: 60%;
            max-width: 300px;
            text-indent: 10px;
            border-radius: 5px;
            box-shadow: 0 1px 0 rgba(255, 255, 255, 0.24), 0 1px 6px rgba(0, 0, 0, 0.45) inset;
            margin-right: 20px ;
        }

        .content {
            min-width: 100px;
            max-width: 600px;
            margin: 0 auto;
            margin-bottom: 20px;
        }

        .doing, .done {
            position: relative;


        }

        .todocount, .donecount {
            position: absolute;
            top: 5px;
            right: 10px;
        }

        .doing h2, .done h2 {
            margin-bottom: 20px;
        }

        .todolist li, .donelist li{
            position: relative;
            padding-left: 40px;
            height: 30px;
            line-height: 30px;
            border-left: solid 10px rgba(60, 139, 230, 0.685);
            border-radius: 5px;
            background-color: rgba(245, 245, 245, 0.747);
            margin-bottom: 20px;

        }

        .todolist li input, .donelist li input {
            position: absolute;
            left: 10px;
            top: 5px;
            width: 20px;
            height: 20px;
            cursor: pointer;
            
        }

        .todolist li a, .donelist li a {
            position: absolute;
            right: 10px;
            top: 5px;
            width: 20px;
            height: 20px;
            text-align: center;
            line-height: 18px;
            border-radius: 20px;
            background-color: rgba(179, 174, 174, 0.747);
            cursor: pointer;
        }

        .todolist li button, .donelist li button {
            position: absolute;
            right: 10px;
            top: 5px;
            width: 20px;
            height: 20px;
            line-height: 10px;
            text-align: center;
            border-radius: 50%;
            background-color: rgba(179, 174, 174, 0.747);
            cursor: pointer;
        }

        .footer {
            color: #666;
            font-size: 14px;
            margin-top: 30px;
            text-align: center;
        }