.practice_header[data-v-7248506e]{position:relative;height:57px;line-height:57px;border-bottom:1px solid #e3e7ef}.practice_header .header_detail .go_back[data-v-7248506e]{font-size:14px}.practice_header .header_detail .go_back span[data-v-7248506e]{position:relative;top:-7px;cursor:pointer}.practice_header .header_detail .go_back i[data-v-7248506e]{font-size:24px;color:#4585fe}.practice_header .header_detail .book_title[data-v-7248506e]{font-size:20px;position:absolute;left:50%;transform:translateX(-50%)}