TI-LAB2-CSS

@charset "UTF-8";

html {
    background: white;
}

#kontener {
    width: 90%;
    margin: auto;
    font-family: "Tahoma", "sans-serif";
    font-size: 1rem;
}

#naglowek {
    width: 100%;
    background: #ccc;
    text-align: center;
    padding: 0.5rem 0;
    box-sizing: border-box;
}

#naglowek h1 {
    margin: 0;
    padding: 1rem;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    font-size: clamp(1.5rem, 6vw, 3.5rem);
    line-height: 1;
    overflow: hidden;
    box-sizing: border-box;
}

#srodek {
margin-top: 1rem;
}

#stopka {
background: #888;
color: white;
padding: 0.2rem;
text-align: center;
}

#menu {
    width: 10rem;
    float: left;
    margin-right: 1rem;
}

@media only screen and (min-width: 641px) {
    .hamburger-button {
        display: none;
    }

    .menu-list {
        display: block !important;
    }
}

#newsy {
    background: #ddd;
    padding: 0 0.3rem 0.3rem;
}

#tresc {
    background: #ccc;
    text-align: justify;
    padding: 0.5rem;
    margin-left: 11rem;
    margin-bottom: 1rem;
}

#stopka {
    clear: both;
    background: #888;
    color: white;
    padding: 0.2rem;
    text-align: center;
}

.hamburger-checkbox {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.hamburger-icon {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 10px 0;
    background: #fff;
    margin-bottom: 0.5rem;
    border: 0;
    align-items: center;
    justify-content: center;
}

.hamburger-icon span {
    width: 30px;
    height: 3px;
    background-color: #333;
    margin: 4px 0;
    transition: 0.3s;
    border-radius: 2px;
    display: block;
}

.menu-list {
    display: block;
}

.menu-list li {
    list-style: none;
    font-size: 90%;
}

.menu-list a {
    text-decoration: none;
    color: black;
    background: #eee;
    padding: 0.3rem;
    margin-bottom: 0.5rem;
    display: block;
    text-align: center;
    transition: all 0.5s ease-in-out;
}

.menu-list a:hover {
    background: #888;
    color: white;
}

@media only screen and (max-width: 640px) {
    #menu {
        width: 100%;
        padding: 0;
    }

    #tresc {
        margin-left: 0;
        clear: both;
    }

    #newsy {
        text-align: center;
        background: #aaa;
    }

    #kontener {
        min-width: 320px;;
        width: 100%;
    }

    .hamburger-icon {
        display: flex;
    }

    .menu-list {
        display: none;
        width: 100%;
        padding: 0;
        margin: 0.25rem 0;
    }

    .hamburger-checkbox:checked + .hamburger-icon + .menu-list {
        display: block;
    }

    #menu ul {
        margin: 0;
        padding: 0;
    }
}