* {
    margin: 0;
    padding: 0;
}

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

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

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-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;
}


.main-part {
    padding-top: 30px; 
    margin-left: 10%;
}

/* Паспорт */
.passport {
    background-image: url(../images/mypasport.png);
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
    width: 100%;
    max-width: 900px;
    height: 750px;
    position: relative;
    margin: 0 auto;
    margin-bottom: 35px;
}

.passport-text {
    font-size: 18px;
    font-family: 'Courier New', Courier, monospace;
    font-weight: bold;
    letter-spacing: 1px;
}

.issuing-passport {
    position: absolute;
    top: 10.2%;
    left: 28.6%;
}

.issuing-date {
    position: absolute;
    top: 22%;
    left: 26%;
    letter-spacing: 0;
}

.unit-code {
    position: absolute;
    top: 22%;
    left: 58%;
}

.surname {
    position: absolute;
    top: 56.7%;
    left: 53%;
}

.name {
    position: absolute;
    top: 64.7%;
    left: 55%;
}

.patronymic {
    position: absolute;
    top: 68.5%;
    left: 51%;
}

.gender {
    position: absolute;
    top: 72.4%;
    left: 43.5%;
}

.birthday {
    position: absolute;
    top: 72.4%;
    left: 57%;
    letter-spacing: 0;
}

.city {
    position: absolute;
    top: 76%;
    left: 51%;
}

.area {
    position: absolute;
    top: 80%;
    left: 47.5%;
}

.passport-photo {
    position: absolute;
    top: 61.9%;
    left: 25%;
    height: 182px;
}

.change {
    font-size: 22px;
    width: 230px;
    height: 80px;
    padding: 20px;
    margin-left: 40%;
}

.first-part {
    margin-bottom: 50px;
}