@import url('https://fonts.googleapis.com/css2?family=Ubuntu:wght@400;700&display=swap');

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    color: #eee;
    display: flex;
    background: #1c477a;
    align-items: center;
    flex-direction: column;
    justify-content: center;
    font-family: 'Ubuntu', sans-serif;
}

h1 {
    opacity: 0.4;
    outline: 0.2px;
    font-size: 10rem;
    text-align: center;
    font-family: inherit;
    outline-color: tomato;
    color: rgb(10, 50, 100);
}

form {
    width: 400px;
    max-width: 100%;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.input {
    width: 100%;
    border: none;
    color: tomato;
    display: block;
    font-size: 2rem;
    padding: 1rem 2rem;
    font-family: inherit;
    border-bottom: solid 2px tomato;
    background: rgba(10, 50, 100, 0.4);
}

.input::placeholder {
    color: #888;
    opacity: 0.4;
}

.input:focus {
    outline: none;
}

.todos {
    margin: 0;
    padding: 0;
    list-style-type: none;
}

.todos li {
    color: tomato;
    cursor: pointer;
    font-size: 1.5rem;
    padding: 1rem 2rem;
    border-top: 1px solid rgba(255, 100, 100, 0.6);
}

.todos li.completed {
    text-decoration: line-through;
    text-decoration-color: tomato;
    color: rgba(255, 100, 100, 0.6);
}

small {
    color: steelblue;
    margin-top: 3rem;
    text-align: center;
    margin-bottom: 1rem;
}