style.css

body {
  font-family: 'Roboto', sans-serif;
}

header {
  margin: 0 auto;
  text-align: center;
}

header h1 {
  margin-top: 0;
  margin-bottom: 0;
}

.watermelon {
  width: 5em;
  height: 5em;
  margin-bottom: 0.5em;
}

.main-container {
  margin-top: 20px;
  width: 20em;
  height: 25em;
  margin: 0 auto;
  border-radius: 2em;
  border: solid 8px #2c3033;
  background: white;
  box-shadow: 0 0 0px 1px rgba(255, 255, 255, .4), 0 0 0px 3px #2c3033;
  overflow: hidden;
  position: relative;
}

.center-container {
  margin-top: 10%;
}


/*.main-container {
  margin: 0 auto;
  width: 500px;
  text-align: center;
  border: gray 1.5px solid;
}
*/

.todo-container {
  width: 100%;
  padding: 0px;
  margin: 0px;
  height: 22em;
  overflow-y: scroll;
}

ul {
  padding: 0px;
}

.list-block {
  border-bottom-left-radius: 10px;
  height: 50px;
}


/*form*/

.add-todo {
  text-align: center;
}

ul li {
  list-style-type: none;
  margin: 0;
  padding: 0;
  border-top: solid gray 1.5px;
  height: 40px;
  text-align: left;
  text-indent: 10px;
}

button {
  float: right;
}

.fa {
  padding: 5px;
  font-size: 10px;
  width: 10px;
  text-align: center;
  text-decoration: none;
  border-radius: 50%;
}

.fa .fa-trash {
  font-size: 50px;
}