body, h1,h2,h3,h4,p,ol,ul {
    margin: 0;
    padding: 0;
}

body{ 
    background-color: rgb(146, 208, 236);
    font-size: 16px;
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;

}

.wrapper_flex {
    display: flex;
    flex-direction: column;
    
}
header {
    display: flex;
    justify-content: left;
    align-items: center;
    color: rgb(17, 14, 39);
    background-color:rgb(94, 181, 221);
}
.header_menu {
    width: 100%;
    justify-content: center;
    display: flex;
    padding: 50px;
    list-style: none;
}


.menu_item a {
    padding: 10px;
    color: white;
    text-decoration: none;

    font-size: 20px;
    transition: all 2s;
}
.menu_item a:hover {
    background-color:rgba(27, 2, 24, 0.7);
}

.wrapper {
    width: 1500px;
    height: 100vh;
    margin: 0 auto;
    background-color: rgb(146, 208, 236);
    background-image: url("photo/content_book_\ main.jpg");
    background-repeat: no-repeat;
    

}
.wrapper_content {
    display: flex;
    flex-direction: column;
    align-items: center;
    background-color: rgb(0, 0, 0);
    margin-top: 700px;
    color: rgb(207, 203, 218);
    box-shadow: 0 -50px 20px 0 rgba(0, 5, 7, 0.952);
    
}
.book {
    background-color: rgb(1, 5, 7);
    padding: 20px;
}
.list_elements {
    padding: 30px 0;
    width: 70%;
    display: flex;
    justify-content: space-around;
    list-style: none;
}

.list_item {
    transition: all 0.2s ease-in;
    cursor: pointer;
    
}

.list_item:hover {
    transform: scale(1.2);
}
.title {
    padding: 0 40px;
    text-indent: 50px;
}