* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Segoe UI';
}

.nav {
    width: 100%;
    background-color: #1A237E;
    display: flex;
    align-items: center;
}

    .nav > .nav-header {
        flex: 0.95;
        padding-left: 1rem;
    }

        .nav > .nav-header > .nav-title {
            font-size: 22px;
            color: #fff;
        }

    .nav > .nav-list {
        display: flex;
        gap: 2rem;
    }

        .nav > .nav-list > li {
            list-style-type: none;
        }

            .nav > .nav-list > li a {
                text-decoration: none;
                color: #efefef;
                cursor: pointer;
            }

    .nav > #nav-check {
        display: none;
    }

@media (max-width: 480px) {
    .nav {
        padding: 1rem;
    }

        .nav > .nav-btn {
            display: inline-block;
            position: absolute;
            right: 0;
            top: 0;
            padding-top: 0.2rem;
        }

            .nav > .nav-btn > label {
                display: inline-block;
                width: 50px;
                height: 50px;
                padding: 13px;
            }

                .nav > .nav-btn > label > span {
                    display: block;
                    width: 25px;
                    height: 10px;
                    border-top: 2px solid #eee;
                }

        .nav > .nav-list {
            position: absolute;
            display: flex;
            flex-direction: column;
            gap: 1rem;
            width: 100%;
            background-color: #1A237E;
            height: 0;
            transition: all 0.3s ease-in;
            top: 40px;
            left: 0;
            overflow: hidden;
        }

            .nav > .nav-list > li {
                width: 100%;
                margin-top: 1.5rem;
            }

        .nav > #nav-check:checked ~ .nav-list {
            height: calc(100vh - 50px);
        }
}