body{
    font-family: 'Bubblegum Sans';
    background-color: #546e7a;
    color: #f7f7f7;
}
ul {
    list-style: none;
    margin: 0;
    padding: 0;
}
#container {
    width: 360px;
    margin: 100px auto;
    box-shadow: 0 0 3px rgba(0,0,0, .5);
}
input{
    font-family: inherit;
    font-size: 18px;
    background-color: #263238;
    width: 100%;
    padding: 13px 13px 13px 20px;
    box-sizing: border-box ;
    border: none;
}
input:focus {
    outline: none;
}
span {
   height: 60px;
   text-align: center;
   width: 60px;
   float: right;
}
h1 {
    background-color: #263238;
    margin: 0;
    padding: 10 px 20px;
    text-transform: uppercase;
    font-size: 24px;
    font-weight: normal ;
}
li {
    background-color: #37474f;
    height: 60px;
    line-height: 60px;
    padding: 0 0 0 20px;
}
li:nth-child(2n) {
background-color: #455a64;
}
.done{
    color: gray;
    text-decoration: line-through;
}