.cabecalho {
    position: absolute;
    top: 0;
    width: 100%;
    box-sizing: border-box;
    color: #fff;
    text-align: center;
    font-size: 0.6rem;/*9,6PX*/
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 0.23em;
}

.cabecalho__logo {
    padding: 1.5em 0;
    width: 14.5em;
}
.cabecalho__menu {
    display: flex;
    justify-content: space-evenly;
    flex-wrap: wrap;
    background-color: #272B3A87;
}
.cabecalho__item-menu {
    display: inline-block;
}
.cabecalho__item-menu a {
    display: inline-block;
    padding: 1.86em 1.42em;
}

@media (min-width: 640px) {
    .cabecalho {
    padding-top: 0;
    padding-bottom: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
   }
    .cabecalho__logo {
    padding: 2.5em 0;
   }
    .cabecalho__menu {
    background-color: transparent; 
   }
}

@media (min-width: 770px) {
    .cabecalho__item-menu--matricular {
    margin-left: 1.42em;
    border-radius: 6px;
    background-color: #e93d50;
    }

    .cabecalho__item-menu--matricular a {
    padding: 1.8em 3.5em;
    }
}