*{
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  color: white;
  font-family: sans-serif;
  background-color:black;
}

body{
  margin: 0;
}

header{
  position: sticky;
  width: 100%;
  display: grid;
  top: 0;
  padding: 10px 0 0 10px;
  grid-template-columns:repeat(4, 1fr);
  background-color:black;
  z-index: 2;
  font-size: 1.24em;
  line-height: 1.3em;
}

img{
  display: block;
}

.filet{
  border-top: 2px solid;
  border-top-color: #069e2d;
  grid-column-start: 1;
  grid-column-end: 6;
  position: sticky;
  z-index: 2;
}

a{
  color: white;
  text-decoration: none;
}

a:hover{
  color: #069e2d;
}
a1{
  color: white;
  text-decoration: none;
}

main{
  background-color: black;
  padding-top: 10px;
  font-size: 1.00em;
  line-height: 1.2em;
}


.container{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap:1em;
  padding: 5px 10px 10px;
}

.container-inline{
  display: inline-grid;
}

.projet{
  grid-column: 1;
  top: 10px;
  color: #069e2d;
}




.description1{
  grid-column: 3;
  padding-bottom: 0.5em;
}

footer{
  padding-top: 10px;
  font-size: 1.00em;
  padding: 10px 0 0 10px;
}

.container:nth-child(even) .image-grand,
.container:nth-child(odd) .description{
  grid-column: 2;
}



.description,
.image-grand{
  grid-column: 3;
  grid-row: 1;
}




.imgcont{
  display: grid;
  grid-auto-flow: column;
  grid-gap: 10px;
  padding: 0 10px;
}

.image-grande{
    padding: 0 0 10px;
}


@media screen and (max-width: 1280px){
  header, .container{
      grid-template-columns: repeat(4, 1fr);
  }
}

@media screen and (max-width: 1080px){
  header, .container{
      grid-template-columns: repeat(3, 1fr);
  }
}

@media screen and (max-width: 720px){
  header, .container{
      grid-template-columns: repeat(2, 1fr);
  }

  .description,
  .image-grand{
    grid-column: 2;
    grid-row: initial;
  }

  .container:first-child .description{
    grid-column: 2;
  }

  .description1{
    grid-column: 2;
  }

  .container:nth-child(even) .image-grand,
  .container:nth-child(odd) .description{
    grid-column: initial;
    grid-column: 2;
  }

  .imgcont{
    display: block;
  }
}

@media screen and (max-width: 540px){
.container{
     display: block;
  }

    .description{
      padding-bottom: 1em;
    }
}