* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;

}

ul,
ol {
    list-style: none;
}

button,
input {
    border: none;
    /* 外边轮廓线 */
    outline: none;
    font-size: 16px;
}

/* 清除a标签默认的下划线 */
a {
    text-decoration: none;
    color: #333;
}
/* a转成块级 */
a._block {
    display: block;
}


.wrapper {
    width: 1200px;
    margin: 0 auto;
}

.u_imgs {
    width: 100%;
    height: 100%;
}

.goodsbuy_all_cates {
    margin: 20px 0;
}