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

:root {
  --cor1: #001542;
  --cor2: #085454;
  --cor3: #7A7A7A;
  --cor4: #FFFFFF;
  --cor5: #FFB30D;

  --fonte-padrao: 'Open Sans', 'Roboto', sans-serif;
  --fonte-destaque: 'Montserrat', sans-serif ,'Poppins', sans-serif, Arial;
}

@media screen and (max-width: 900px) {
  .gridcontainer, .main, article, aside{
    display: block;
    width: 100%;
    margin: 0;
    border-radius: 0;
  }

  /*----------- HEADER -------------*/

  header h1 {
    font-size: 28px;
    margin-bottom: 12px;
  }

  header p {
    font-size: 14px;
    margin-bottom: 15px;
  }

  /*----------- NAV -------------*/

  .nav {
    z-index: 1;
  }

  .dropdown  {
    display: block;
    width: 100%;
    padding: 6px 0;
    font-size: 12px;
  }

  .dropbtn {
    width: 100%;
    padding: 5px 0;
  }

  .dropdown-content {
    width: 100%;
  }

  .dropdown-content a {
    font-size: 14px;
  }

  .main article {
    background-color: #e7e7e7;
  }

  .song {
    top: 51px;
  }

  aside section  {
    width: 100%;
    margin: 10px auto;
    background-color: #e7e7e7;
    border-radius: 0;
  }
}

/*==================== 450 ====================*/

@media screen and (max-width: 450px) {
  .gridcontainer, .main, article, aside{
    display: block;
    width: 100%;
    margin: 0;
    border-radius: 0;
  }

  /*----------- HEADER -------------*/

  header h1 {
    font-size: 28px;
    margin-bottom: 12px;
  }

  header p {
    font-size: 14px;
    margin-bottom: 15px;
  }

  /*----------- NAV -------------*/

  .nav {
    z-index: 1;
  }

  .dropdown  {
    display: block;
    width: 100%;
    padding: 6px 0;
    font-size: 16px;
  }

  .dropdown a {
    padding: 5px;
  }

  .dropbtn {
    width: 100%;
    padding: 5px 0;
  }

  .dropdown-content {
    width: 100%;
  }

  .dropdown-content a {
    font-size: 14px;
  }

  /*----------- article -------------*/

  .main article {
    background-color: #e7e7e7;
  }

  article {
    margin-bottom: 10px;
  }

  #youtube {
    top: 88px;
    max-width: 350px;
    height: 195px;
  }

  #youtube > #video1 {
    max-width: 350px;
    height: 195px;
  }

  .song {
    top: 44px;
  }

  .btnDow {
    font-size: 14px;
  }

  .naveg, .navegtop, .youtubebtn {
    font-size: 14px;
  }

  /*----------- aside -------------*/

  aside section  {
    width: 100%;
    margin: 10px auto;
    background-color: #e7e7e7;
    border-radius: 0;
  }
}

/*==================== 350 ====================*/

@media screen and (max-width: 350px) {
  .gridcontainer, .main, article, aside{
    display: block;
    width: 100%;
    margin: 0;
    border-radius: 0;
  }

  /*----------- HEADER -------------*/

  header h1 {
    font-size: 20px;
    margin-bottom: 12px;
  }

  header p {
    font-size: 12px;
    margin-bottom: 15px;
  }

  /*----------- NAV -------------*/

  .nav {
    z-index: 1;
  }

  .dropdown  {
    display: block;
    width: 100%;
    padding: 6px 0;
    font-size: 12px;
  }

  .dropdown a {
    padding: 2px;
  }

  .dropbtn {
    width: 100%;
    padding: 5px 0;
  }

  .dropdown-content {
    width: 100%;
  }

  .dropdown-content a {
    font-size: 14px;
    padding: 6px 0;
  }

  /*----------- article -------------*/

  .main article {
    background-color: #e7e7e7;
  }

  article {
    margin-bottom: 10px;
  }

  #youtube {
    top: 73px;
  }

  article #youtube #video1 {
    max-width: 280px;
    height: 165px;
  }

  .youtubebtn {
    font-size: 14px;
  }

  .song {
    top: 44px;
  }

  article .imgDiscp {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: auto;
    max-width: 280px;
    height: auto;
    padding: 7px;
  }

  article h3 {
    font-size: 18px;
  }

  article p {
    font-size: 14px;
  }

  article .btnDow {
    font-size: 12px;
  }

  .naveg, .navegtop {
    font-size: 12px;
  }

  /*------------- aside -------------*/

  section h3 {
    font-size: 18px;
  }

  section p {
    font-size: 16px;
  }
}