* {
    margin: 0;
    padding: 0;
    font-family: Calibri, sans-serif;
}

header {
    position: sticky;
    top: 0;
    width: 100%;
    background-color: #ffffff;
}

header h1 {
    text-align: center;
    font-size: 35px;
    user-select: none;
}

header nav ul {
    margin: 3px 0 3px 0;
    list-style-type: none;
    display: flex;
    justify-content: space-around;
}

header nav ul li {
    padding: 0 7px 1px 7px;
    background-color: #dddddd;
    border: 2px solid #000000;
    border-radius: 100px;
    transition-duration: 250ms;
}

header nav ul li:hover {
    background-color: #88ff88;
    border: 2px solid #00dd00;
}

header nav ul li a {
    font-size: 25px;
    cursor: pointer;
    text-decoration: none;
    color: #000000;
    user-select: none;
}

table {
    margin: 10px;
    width: calc(100vw - 20px);
    border: 2px solid #000000;
    border-radius: 100px;
    border-collapse: collapse;
}

th {
    border: 2px solid #000000;
}

th, td {
    text-align: center;
    padding: 2px;
}

#termine-mobile {
    list-style-type: none;
    margin: 10px;
    width: calc(100vw - 20px);
}

#termine-mobile li  {
    display: flex;
    flex-wrap: wrap;
    margin: 10px;
    border: 2px solid #000000;
    border-radius: 15px;
    border-collapse: collapse;
    padding: 2px 5px 2px 5px;
}

.element {
    margin: 5px;
    width: max-content;
}

@media screen and (max-width: 800px) {
    #termine {
        display: none;
    }
}

@media screen and (min-width: 800px) {
    #termine-mobile {
        display: none;
    }
}