* {
    box-sizing: border-box;
    padding: 0;
    margin: 0;
    font-family: sans-serif;
}

body {
    background: url(/images/2111.w039.n003.23B.p1.23.jpg);
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    position: relative;
    z-index: 1;
    height: 100vh;
    padding-top:  18%;
}

body::after {
    content: "";
    top: 0;
    left: 0;
    position: absolute;
    background: rgba(255, 255, 255, 0.897);
    width: 100%;
    height: 100%;
    z-index: -1;
}

.container {
    margin: auto;
    border-radius: 15px;
    width: 600px;
    border: 2px solid green;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 20px;
}

.todo-container {
    display: flex;
    justify-content: center;
    gap: 20px;
    width: 100%;
}

h3 {
    font-size: 1.8rem;
    color: #157915;
    font-weight: 800;
    padding: 10px 0;
    text-align: center;
}

h4 {
    font-size: 0.8rem;
    padding: 10px 0;
}

input {
    width: 90%;
    padding: 10px;
    outline: none;
    border-radius: 8px;
    border: 1px solid black;
}

input[type] {
    font-size: 0.9rem;
}

input:focus {
    border: 1px solid #157915;
}

button {
    padding: 10px 16px;
    background-color: #157915;
    border: none;
    color: #fff;
    cursor: pointer;
    outline: none;
}

button:hover {
    opacity: 0.5;
}

li {
    display: flex;
    justify-content: space-between;
    color: #000000;
    margin-bottom: 10px;
    padding: 10px;
    align-items: center;
}

ul {
    background-color: #c3ffc3;
}

@media (max-width: 768px) {
    body {
        padding-top: 25%;
    }

    .container {
        width: 90%;
        padding: 15px;
        border-radius: 12px;
    }

    h3 {
        font-size: 1.5rem;
    }

    .todo-container {
        flex-direction: column;
        gap: 12px;
    }

    input {
        width: 100%;
        font-size: 1rem;
    }

    h4 {
        font-size: 0.6rem;
    }

    button {
        width: 100%;
        padding: 12px;
        font-size: 1rem;
    }

    li {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
        font-size: 0.9rem;
    }
}