index.css

@import url(https://fonts.googleapis.com/css?family=Open+Sans);

html {
    height: 100%;
    background-image: linear-gradient(to right top, #c56d09 0%, rgb(200, 90, 5) 100%);
}

body {
    text-align: center;
}

h1 {
    text-align: center;
    font-size: 15px;
    font-family: Helvetica, sans-serif;
    color: #ffffff;
    border-radius: 5px;
    width: auto;
    border: rgb(255, 102, 0) 1px solid;
    padding: 5px 10px 5px 10px;
    margin-top: 50px;
}

ul {
    text-align: left;
    margin-top: 20px;
}


li {
    list-style: none;
    width: 70%;
    font-size: medium;
    font-family: Helvetica;
    padding: 10px 20px;
    color: rgb(255, 102, 0);
    text-transform: capitalize;
    font-weight: 600;
    border: 2px solid rgb(255, 102, 0);
    border-radius: 5px;
    margin-bottom: 10px;
    background: floralwhite;
}

li>button {
    font-weight: normal;
    background: none;
    border: none;
    float: right;
    color: #025f70;
    font-weight: 800;
}

/* */

input {
    border-radius: 5px;
    min-width: 65%;
    padding: 15px;
    border: none;
}

button {
    border: none;
    padding: 11px;
    font-size: 20px;
    font-family: Helvetica;
    border-radius: 5px;
    color: #ffffff;
    background-color: rgb(255, 102, 0);
}

button:hover {
    background-color: rgb(224, 132, 10);
    color: #ffffff;
}

.done {
    background: rgb(255, 102, 0) !important;
    color: #ffffff;
    text-decoration: line-through;
}

.delete {
    display: none;
}