<nav class="nav">
    <ul class="nav__list">
        <li class="nav__item">Комитет
            <ul class="nav__sub-list">
                <li class="nav__sub-item"><a class="nav__sub-link" href="#">Список СШ</a></li>
                <li class="nav__sub-item"><a class="nav__sub-link" href="#">Список учебных заведений</a></li>
                <li class="nav__sub-item"><a class="nav__sub-link" href="#">Тренерский состав</a></li>
            </ul>
        </li>
        <li class="nav__item">Деятельность</li>
        <li class="nav__item">Тренеры</li>
        <li class="nav__item">Программы</li>
        <li class="nav__item">Ведомство</li>
        <li class="nav__item">Пресс-центр</li>
        <li class="nav__item">Обратная связь</li>
        <li class="nav__item">ГТО</li>
    </ul>
</nav>

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    background: #EEEEEE;
}

.nav {
    max-width: 1200px;
    margin: 0 auto;
    
    font-size: 14px;
    font-family: Arial, Helvetica, sans-serif;
    color: #fff;
    
    background: #1A1A1A;
}
.nav__list {
    display: flex;

    list-style: none;
}
.nav__item {
    position: relative;
    
    flex-grow: 1;
    flex-basis: 0;
    flex-shrink: 0;
    padding: 15px 0;

    text-align: center;
  white-space: nowrap;
}
.nav__item:hover {
    background: #007EDA;
}
.nav__sub-list {
    position: absolute;
    top: 100%;
    left: 0;

    min-width: 100%;
/*     width: 200px; */
    display: none;

    color: #000;
    text-align: left;

    background: #fff;
    list-style: none;
}
.nav__item:hover .nav__sub-list{
    display: block;
}
.nav__sub-item {

}
.nav__sub-link {
    display: block;
    padding: 10px 20px;

    color: #000;
    text-decoration: none;
}
.nav__sub-link:hover {
    color: #007EDA;
}