body {
   font-family: Arial, Helvetica, sans-serif;
}

ol button {
   width: 28px;
   height: 28px;
   line-height: 10px;
   margin-right:3px;
}

li {
   margin-bottom: 5px;
}

.task-text {
   display: inline-block;
   width: 500px;
}

.done-btn {
   background-color: black;
   border: 0;
   opacity: 0.5;
}

.done-btn:hover {
   cursor: pointer;
   opacity: 1;
}