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

body {
    font-size: 100%;
    font-family: "Montserrat", sans-serif;
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0 0 0 6zm-96 0a3 3 0 1 0 0-6 3 3 0 0 0 0 6zm0 16a3 3 0 1 0 0-6 3 3 0 0 0 0 6zm16-32a3 3 0 1 0 0-6 3 3 0 0 0 0 6zm96 0a3 3 0 1 0 0-6 3 3 0 0 0 0 6zm-16-64a3 3 0 1 0 0-6 3 3 0 0 0 0 6zm16-16a3 3 0 1 0 0-6 3 3 0 0 0 0 6zm-32 0a3 3 0 1 0 0-6 3 3 0 0 0 0 6zm0-16a3 3 0 1 0 0-6 3 3 0 0 0 0 6zm-16 0a3 3 0 1 0 0-6 3 3 0 0 0 0 6zm-16 0a3 3 0 1 0 0-6 3 3 0 0 0 0 6zm-16 0a3 3 0 1 0 0-6 3 3 0 0 0 0 6zM49 36a3 3 0 1 0 0-6 3 3 0 0 0 0 6zm-32 0a3 3 0 1 0 0-6 3 3 0 0 0 0 6zm32 16a3 3 0 1 0 0-6 3 3 0 0 0 0 6zM33 68a3 3 0 1 0 0-6 3 3 0 0 0 0 6zm16-48a3 3 0 1 0 0-6 3 3 0 0 0 0 6zm0 240a3 3 0 1 0 0-6 3 3 0 0 0 0 6zm16 32a3 3 0 1 0 0-6 3 3 0 0 0 0 6zm-16-64a3 3 0 1 0 0-6 3 3 0 0 0 0 6zm0 16a3 3 0 1 0 0-6 3 3 0 0 0 0 6zm-16-32a3 3 0 1 0 0-6 3 3 0 0 0 0 6zm80-176a3 3 0 1 0 0-6 3 3 0 0 0 0 6zm16 0a3 3 0 1 0 0-6 3 3 0 0 0 0 6zm-16-16a3 3 0 1 0 0-6 3 3 0 0 0 0 6zm32 48a3 3 0 1 0 0-6 3 3 0 0 0 0 6zm16-16a3 3 0 1 0 0-6 3 3 0 0 0 0 6zm0-32a3 3 0 1 0 0-6 3 3 0 0 0 0 6zm112 176a3 3 0 1 0 0-6 3 3 0 0 0 0 6zm-16 16a3 3 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    margin: 0;
    padding: 0;
/*    padding-top: 100px;*/
}



/* Styly pro tlačítka v hlavičce */


.student-section {
    margin-bottom: 40px; /* Větší mezera mezi sekcemi */
}
.class-box {
    margin-left: 1em;
    margin-right: 1em;
    background-color: #ffffff;
    padding: 20px;
    margin: 40px; /* Rozestup mezi třídami */
    box-shadow: 0 4px 5px 0 rgba(0, 0, 0, .14), 0 1px 10px 0 rgba(0, 0, 0, .12), 0 2px 4px -1px rgba(0, 0, 0, .2);
}
@media only screen and (min-width: 36em) {
    .class-box {
        margin-left: 1.5em;
        margin-right: 1.5em;
    }
}
@media only screen and (min-width: 48em) {
    .class-box {
        margin-left: 2em;
        margin-right: 2em;
    }
}

.student-list {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    grid-gap: 20px;
}
@media only screen and (min-width: 36em) {
    .student-list {
        grid-template-columns: repeat(2, 1fr);
    }

}
@media only screen and (min-width: 48em) {
    .student-list {
        grid-template-columns: repeat(3, 1fr);
    }

}
@media only screen and (min-width: 62em) {
    .student-list {
        grid-template-columns: repeat(4, 1fr);
    }
}

.student {
    display: block;
    color: #333;
    background-color: #f0f0f0; /* Barva pozadí obdélníku */
    padding: 10px; /* Odsazení obsahu obdélníku */
    border-radius: 5px; /* Zaoblené hrany */
    transition: background-color 0.3s; /* Přechodový efekt pro změnu barvy pozadí */
    text-align: center; /* Zarovnání textu na střed */
    text-decoration: none;
    cursor: pointer; /* Při najetí myší se kurzor změní na ruku, indikující odkaz */
}

/* Efekt při najetí myší */
.student:hover {
    background-color: #e0e0e0; /* Nová barva pozadí při najetí myší */
}






header {
    background-color: #ffffff;
    box-shadow: 0 4px 5px 0 rgba(0, 0, 0, .14), 0 1px 10px 0 rgba(0, 0, 0, .12), 0 2px 4px -1px rgba(0, 0, 0, .2);
    color: #fff;
    padding: 20px 30px;
    display: grid;
    grid-template: 1fr/ auto 1fr auto;
    column-gap: 1.5em;
    align-items: center;
    width: 100%;
    top: 0;
    
}


h1 {
    color: #198754;
    font-family: "Inconsolata", monospace;
    font-weight: 900;
    font-size: 2rem;
}

.nav-buttons a.active {
    background-color: #d1d1d1;
    color: #333;
    transition: background-color 300ms ease-in-out;
}
.nav-buttons a:hover.active {
    background-color: #f0f0f0; /* Barva pozadí při najetí myší */
}

.nav-buttons {
    position: relative;
    grid-area: 1/3/1/3;
}

.nav-buttons ul {
    display: none;
    column-gap: 1em;
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav-buttons a {
    display: block;
    text-decoration: none;
    padding: 10px 20px;
    background-color: #f0f0f0;
    border-radius: 3px;
    border: 2px white solid;
    color: #333;
    transition: background-color 300ms ease-in-out;
}

.nav-buttons a:hover {
    background-color: #e0e0e0; /* Barva pozadí při najetí myší */
}

.header-buttons {
    display: none;
    column-gap: 1em;
    grid-area: 1/4/1/4;
}

.header-buttons a {
    display: block;
    text-decoration: none;
    padding: 10px 20px;
    background-color: #198754;
    border-radius: 5px;
    color: #ffffff;
    transition: background-color 300ms ease-in-out;
}
.header-buttons a:hover {
    background-color: #11643d; /* Barva pozadí při najetí myší */
}

.header-buttons2 {
    display: flex;
    column-gap: 1em;
    grid-area: 1/4/1/4;
    justify-content: center;
    margin-top: 50px;
}

.header-buttons2 a {
    display: block;
    text-decoration: none;
    padding: 10px 20px;
    background-color: #198754;
    border-radius: 5px;
    color: #ffffff;
    transition: background-color 300ms ease-in-out;
}
.header-buttons2 a:hover {
    background-color: #11643d; /* Barva pozadí při najetí myší */
}

.hamburger{
    display:flex;
    border: unset;
    background:unset;
    cursor: pointer;
}
.hamburger svg{
    stroke: #198754;
}

.dropdown-content {
    width: 200px;
    display: none;
    position: absolute;
    top: 67px;
    right: 15px;
    
}
.open .dropdown-content {
    display: block;
}


@media only screen and (min-width: 1160px) {
    .class-box {
        margin-left: 3em;
        margin-right: 3em;
    }

    header {
        position:fixed;
    }
    body{
        padding-top:100px;
    }
    .nav-buttons ul {
        display: flex;
    }
    .header-buttons2 {
        display: none;
    }
    .header-buttons {
        display: flex;
    }

    .hamburger{
        display:none;
    }
    .nav-buttons a {
        border: 0px;
        background-color: #f0f0f0;
        border-radius: 5px;
        color: #333;

    }
    .dropdown-content {
        width: 200px;
        display: none;
        position: static;
        top: 0px;
        right: 0px;
        
    }
    .nav-buttons {
        position: relative;
        grid-area: 1/2/1/2;
    }
}

@media only screen and (min-width: 75em) {
    .class-box {
        margin: 40px 4em;
    }
}
@media only screen and (min-width: 90em) {
    .class-box {
        max-width: 80em;
        margin: 40px auto;
    }
}