styles.css

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.app {
    display: grid;
    height: 100vh;
    overflow: hidden;
    grid-template-columns: 200px 1fr;
    grid-template-rows: min-content 1fr min-content;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.header {
    display: flex;
    align-items: center;
    padding: 4px 40px;
    background-color: bisque;
    grid-column: 1 / 3;
    font-size: 18px;
}

.header__logo {
    display: flex;
    align-items: center;
    width: 170px;
}

.header__title {
    font-size: 16px;
}

.header__navigation {
    margin-left: 40px;
}

.header__search {
    width: 100%;
    min-width: 100px;
    max-width: 500px;
    margin-left: auto;
}

.accordion {
    padding: 10px;
    background-color: cadetblue;
}

.footer {
    display: flex;
    justify-content: space-between;
    background-color: bisque;
    grid-column: 1 / 3;
    padding: 10px 40px;
    font-size: 18px;
}

.footer__nagivation {
    display: flex;
    flex-direction: column;
}

.tags {
    list-style: none;
    font-size: 18px;
}

.tag {
    cursor: pointer;
}

.tag:hover {
    color: #606060;
}

.link {
    text-decoration: none;
    color: inherit;
}

.link:hover {
    text-decoration: underline;
}

.content {
    padding: 10px;
    display: flex;
    flex-direction: column;
    margin: 0 auto;
    width: 50%;
}

.todo-input {
    margin-bottom: 10px;
    width: 100%;
}

.todos {
    list-style: none;
}

.todo {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
}

.item-actions__action {
    margin-left: 10px;
    padding: 2px;
}

.hide {
    display: none;
}