/* Reset CSS */
* {
   margin: 0; /* MARGEM EXTERNA */
   padding:0;
   box-sizing: border-box;
}

body {
    background: #bbbbbb; /* COR FUNDO */
}

header {
    /* FLEXBOX */
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: .5rem 1rem;
    border-bottom: 1px solid #000;
}