body {
        background-image: url("materials/background_general_1920.jpg");
        background-attachment: fixed;
    }

/* ---------------------- MAIN GRID ---------------------- */

  .grid_container {
    display: grid;
    grid-template-areas:
      'header'
      'platinum_stands'
      'gold_stands'
      'silver_stands'
      'footer';
    grid-gap: 30px;
    padding-left: 5%;
    padding-right: 5%;

  }
  
  .grid_container > div {
    text-align: center;
    padding-bottom: 10px;
  }

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

  .header {
    grid-area: header;
    background-color: rgba(24, 55, 78, 0.5);
  }

  .grid_header {
    display: grid;
    grid-template-areas:
      'logo_header titre_header login_header'
      'logo_header s_titre_header .';
    grid-template-columns: 1fr 6fr 2fr;
    grid-gap: 20px;
    /* padding: 20px; */
  }

  .logo_header {
    grid-area: logo_header;
    display: block;
    /* padding-left: 40px; */
  }

  .logo_header a {
    height: 120px;
  }
  
  .login_header {
    grid-area: login_header;
    font-size: small;
    text-align: right;
    padding : 10px;
    color: white;
  }
  
  .titre_header {
    grid-area: titre_header;
    color: rgba(245, 231, 31, 1);
    text-align: left;
    /* padding-left: 40px; */
    font-size: 30px;
  }
  
  .s_titre_header {
    grid-area: s_titre_header;
    font-size: large;
    text-align: left;
    /* padding-left: 40px; */
    color: white;
  }
  

    /* -------------------- PLATINUM --------------------- */

.platinum_stands {
    grid-area: platinum_stands;
    background-color: rgb(255, 255, 255);
    border-style: solid;
    border-color: rgb(170, 203, 230);
}

.grid_platinum {
    display: grid;
    grid-template-areas:
      'titre_platinum titre_platinum'
      'stand_platinum_1 stand_platinum_2';
    grid-template-columns: 1fr 1fr;
    grid-gap: 20px;
    justify-items: center;
    align-items: center;
}

.titre_platinum {
    grid-area: titre_platinum;
    background-color: rgb(170, 203, 230);
    color: black;
    border-radius: 10px;
    margin: 10px;
    font-size: medium;
    font-weight: 700;
    padding: 5px;
    margin-top: 20px;
}

.stand_platinum_1 {
    grid-area: stand_platinum_1;
}

.stand_platinum_2 {
    grid-area: stand_platinum_2;
}

.stand_platinum_1, .stand_platinum_2 {
    display: grid;
    grid-template-areas:
     'auto'
     'auto';
    grid-gap : 10px;
    justify-items: center;
    align-items: center;
}

.stand_platinum_1 a,.stand_platinum_2 a {
    background-color: black;
    color: white;
    text-decoration: none;
    padding : 10px;
    margin-bottom: 10px;
}

.platinum_stands img {
    height: 120px;
}

    /* -------------------- GOLD --------------------- */

.gold_stands {
    grid-area: gold_stands;
    background-color: rgb(255, 255, 255);
    border-style: solid;
    border-color: gold;
}

.grid_gold {
    display: grid;
    grid-template-areas:
      'titre_gold titre_gold'
      'stand_gold_1 stand_gold_2';
    grid-template-columns: 1fr 1fr;
    grid-gap: 20px;
    justify-items: center;
    align-items: center;
}

.titre_gold {
    grid-area: titre_gold;
    background-color:gold;
    color: black;
    border-radius: 10px;
    margin: 10px;
    font-size: medium;
    font-weight: 700;
    padding: 5px;
    margin-top: 20px;
}

.stand_gold_1 {
    grid-area: stand_gold_1;
}

.stand_gold_2 {
    grid-area: stand_gold_2;
}

.stand_gold_1, .stand_gold_2 {
    display: grid;
    grid-template-areas:
     'auto'
     'auto';
    grid-gap : 10px;
    justify-items: center;
    align-items: center;
}

.stand_gold_1 a,.stand_gold_2 a {
    background-color: black;
    color: white;
    text-decoration: none;
    padding : 10px;
    margin-bottom: 10px;
}

.gold_stands img {
    height: 120px;
}

    /* -------------------- SILVER --------------------- */

.silver_stands {
    grid-area: silver_stands;
    background-color: white;
    border-style: solid;
    border-color: silver;
}

.grid_silver {
    display: grid;
    grid-template-areas:
      'titre_silver titre_silver titre_silver titre_silver'
      'logos_silver_1 logos_silver_2 logos_silver_3 logos_silver_4';
    grid-template-columns: 1fr 1fr 1fr 1fr;
    grid-gap: 20px;
    justify-items: center;
    align-items: center;
}

.titre_silver {
    grid-area: titre_silver;
    background-color: silver;
    color: black;
    border-radius: 10px;
    margin: 10px;
    font-size: medium;
    font-weight: 700;
    padding: 5px;
    margin-top: 20px;
}

.logos_silver_1, .logos_silver_2, .logos_silver_3, .logos_silver_4 {
  margin-bottom: 10px;
}

.logos_silver_1 {
    grid-area: logos_silver_1;
}

.logos_silver_2 {
    grid-area: logos_silver_2;
}

.logos_silver_3 {
    grid-area: logos_silver_3;
}

.logos_silver_4 {
    grid-area: logos_silver_4;
}



    /* -------------------- FOOTER --------------------- */
 

  .footer {
    grid-area: footer;
    background-color: rgba(24, 55, 78, 1);
    padding-top: 10px;
  }
  

  .coordonnees_footer {
    font-size: small;
    color: white;
  }
  
  .coordonnees_footer a {
    color: white;
  }
  
  .dev_footer {
    font-size: x-small;
    margin-top: 10px;
    color: white;
  }
  
  .dev_footer a {
    color: white;
    text-decoration: none;
  }
  
  /* Extra large devices (large laptops and desktops, 1160px and up) is by default */
  
  /* Large devices (laptops/desktops, 1160px max) */
  @media only screen and (max-width: 960px) {
    .grid_platinum {
        grid-template-areas:
         'titre_platinum'
         'stand_platinum_1'
         'stand_platinum_2';
        grid-template-columns: auto;
    }
    .platinum_stands img {
        width: 80%;
        max-width: 500px;
        height: auto;
    }

  }
  /* Medium devices (landscape tablets, 740px max) */ 
  @media only screen and (max-width: 760px) {
    .grid_header{
        grid-template-areas:
        'logo_header login_header'
        'titre_header titre_header'
        's_titre_header s_titre_header';
        grid-template-columns: 1fr 1fr;
    }
  }
  
  /* Small devices (portrait tablets and large phones, 620px max) */
  @media only screen and (max-width: 620px) {

  }
  
  /* Extra small devices (phones, 430px max) */
  @media only screen and (max-width: 490px) {
    .grid_gold {
        grid-template-areas:
         'titre_gold'
         'stand_gold_1'
         'stand_gold_2';
        grid-template-columns: auto;
    }
    .grid_silver {
        grid-template-areas: 
        'titre_silver titre_silver'
        'logos_silver_1 logos_silver_2'
        'logos_silver_3 logos_silver_4';
        grid-template-columns: 1fr 1fr;
    }

  }