* {
    margin: 0;
    padding: 0;
}

a {
    color: rgba(17, 17, 17, 1);
}

a:hover {
    text-decoration: none;
    /* color:rgba(17,17,17,1); */
    /* color:rgba(255,255,255,1); */
}

.clearfix::before, .clearfix::after {
    content: "";
    display: block;
    height: 0;
    line-height: 0;
    clear: both;
}

.f_left {
    float: left;
}

.f_right {
    float: right;
}

ul {
    list-style: none;
}