* {
    margin: 0;
    padding: 0;
}

body {
    font-family: Cambria, Cochin, Georgia, Times, 'Times New Roman', serif;
}

li {
    display: block;
    float: left;
    margin: 2px;
    padding: 0px;
    border: 2px;
}

.navig>ul {
    font-size: 25px;
    margin-top: 17px;
}


.nav-item {
    text-decoration: none;
    background: none;
    border: none;
    outline: none;
    cursor: pointer;
    text-decoration: none;
    color: rgb(0, 30, 19);
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    background: rgba(255, 255, 255, 0.251);
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
    font-weight: 500;
}

.nav {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
}


.nav-item:hover {
    background: rgba(255, 255, 255, 0.3);
}

.zadacha {
    font-size: 25px;
    display: inline-block;
    position: absolute;
    right: 0;
}

.nav-item.active {
    background-color: rgba(127, 255, 212, 0.405);
    border-color: rgba(0, 87, 87, 0.541);
    color: rgb(210, 253, 253);
    text-shadow: 25px;
}


.content-wrapper {
    position: absolute;
    top: 130%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
    max-width: 800px;
    padding: 20px;
}

.content-window {
    position: relative;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 15px;
    padding: 40px;
    margin-top: 12%;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    color: white;
}

.feng {
    max-width: 60%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    margin-top: 3%;
    margin-left: 17%;
}

.content {
    font-size: larger;
}

.content>p {
    margin-top: 3%;
}

.first {
    margin-top: 14px;
}

.df {
    max-width: 60%;
    max-height: 60%;
}

/**/
.kvi {
    width: 500px;
    max-width: 100%;
    height: auto;
    display: block;
    margin: 15px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

/* Стили для таблицы */
.ikvi {
    background-color: rgba(209, 246, 234, 0.411);
    margin: 20px auto;
    border-collapse: collapse;
    width: 100%;
    table-layout: fixed;
}

.ikvi td,
.ikvi th {
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 8px;
    text-align: center;
    vertical-align: middle;
}

.ikvi img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

/*арт квинтета*/
.kvi {
    width: 100%;
    max-height: 200px;
    object-fit: cover;
}



.titlekvi {
    background-color: rgba(127, 255, 212, 0.3);
    color: white;
    font-weight: bold;
    padding: 10px 5px;
    margin: 0;
}


.cold {
    width: 100px;
    max-width: 100%;
    height: 100px;
    border-radius: 8px;
    margin: 0 auto;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.jinglu {
    font-size: 30px;
}

.high {
    font-size: 30px;
    text-decoration: none;
    color: inherit;
    background: none;
    border: none;
    outline: none;
}