.h-250{
    height: 250px !important;
}
.h-400{
    height: 400px !important;
}

#imagem-book, #conteudo-book, #container-hashtags{
    width: 50%;
}

.hashtag{
    display: inline-block;
    font-size: medium;
    color: #1b258f;
    border: solid #1b258f 2px;
    border-radius: 5px;
    padding: 10px;
    cursor: pointer;
}
.hashtag:hover{
    color: aliceblue;
    background-color: #1b258f;
    transition: ease-in 0.6s;
}
@media only screen and (max-width: 450px) {
    #imagem-book, #conteudo-book{
        width: 100% !important;
    }
}