@import url('https://fonts.googleapis.com/css2?family=Londrina+Solid:wght@100;300;400;900&family=Roboto:ital,wght@0,100;0,300;0,400;0,500;0,700;0,900;1,100;1,300;1,400;1,500;1,700;1,900&display=swap');

body{
    margin: 0;
    font-family:'roboto',sans-serif;
    min-width: 400px;
}
header{
    padding: 15px;
}
nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
}
nav ul li {
    display: inline-block;
    margin-left: 10px;
}
nav ul li a {
    color: white;
    text-decoration: none;
    font-weight: 100;
}
nav ul li a:hover {
    font-weight: 700;
}
h2{
    text-align: center;
    margin-top: 50px;
    margin-bottom: 0;
    font-size: 2em;
}

a{
    text-decoration: none;
}
h3 {
    font-size: 1.5em;
}
footer{
    border-top: 3px solid black;
    margin-top: 50px;
    padding: 30px;
}

h1:hover {
    -webkit-animation: tracking-in-expand-fwd 0.8s cubic-bezier(0.215, 0.610, 0.355, 1.000) both;
	animation: tracking-in-expand-fwd 0.8s cubic-bezier(0.215, 0.610, 0.355, 1.000) both;
}

#bienvenue{
    background-color: black;
    height: 100vh;
    color: white;
    overflow: hidden;
}
#flex-header {
    display: flex;
    justify-content: space-between;
}
#flex-presentation {
   display: flex;
   justify-content: space-between;
   align-items: center;
   height:calc(100vh - 50px) ;
}

#projet-grille {
    display: grid;
    grid-template-columns: repeat(3,1fr);
    grid-auto-rows: minmax(70px,auto);
    grid-gap:15px;
}
#contact{
    margin-top: 30px;
    text-align: center;
}
#jump_start{
    background: url(images/points.png),center url(images/jump-start.png);
    background-size: cover;
    height: 100vh;
    color: white;
    overflow: hidden;
}

.container{
    width: 1100px;
    margin: 0 auto;
}

.gauche-presentation{
    width: 50%;
}
.gauche-presentation h1{
     font-size: 3em;
     margin: 0;

}

.droite-presentation {
    width: 50%;
    text-align: center;
}
.droite-presentation img {
    width: 70%;

}

.texte-presentation {
     text-align: center;
}

.projet {
    background: black;
    border-radius:5px ;
    color: white;
    padding: 30px 25px;
    transition: all .3s;
    text-shadow: 0 0 15px black;
}
.projet:hover {
    opacity:.7;
}
.projet-a {
    background: center url(images/jump-start.png);
    background-size: cover;
}
.projet-b {
    background: center url(images/rodeo-pump.jpg);
    background-size: cover;
}
.projet-c {
    background: center url(images/pac-man.jpg);
    background-size: cover;
}
.projet-d {
    background: center url(images/mega-pop.jpg);
    background-size: cover;
}
.bouton {
    background: black;
    color: white;
    padding: 15px 30px;
    margin-top: 15px;
}

.bouton:hover {
    -webkit-animation: slide-fwd-center 1s cubic-bezier(0.250, 0.460, 0.450, 0.940) both;
    animation: slide-fwd-center 1s cubic-bezier(0.250, 0.460, 0.450, 0.940) both;
}

@media all and (max-width: 1130px) {
    .container {
        width: 700px;
    }
    #flex-presentation, .texte-presentation {
       padding: 15px;
    }
    #projet-grille{
        grid-template-columns: repeat(2, 1fr);
        padding: 30px;
    }
}
@media all and (max-width:730px) {
    .container {
        width: 100%;
    }
    .gauche-presentation{
        width: 100%;
    }
}

@-webkit-keyframes tracking-in-expand-fwd {
    0% {
      letter-spacing: -0.5em;
      -webkit-transform: translateZ(-700px);
              transform: translateZ(-700px);
      opacity: 0;
    }
    40% {
      opacity: 0.6;
    }
    100% {
      -webkit-transform: translateZ(0);
              transform: translateZ(0);
      opacity: 1;
    }
  }
  @keyframes tracking-in-expand-fwd {
    0% {
      letter-spacing: -0.5em;
      -webkit-transform: translateZ(-700px);
              transform: translateZ(-700px);
      opacity: 0;
    }
    40% {
      opacity: 0.6;
    }
    100% {
      -webkit-transform: translateZ(0);
              transform: translateZ(0);
      opacity: 1;
    }
  }
  
  @-webkit-keyframes slide-fwd-center {
    0% {
      -webkit-transform: translateZ(0);
              transform: translateZ(0);
    }
    100% {
      -webkit-transform: translateZ(160px);
              transform: translateZ(160px);
    }
  }
  @keyframes slide-fwd-center {
    0% {
      -webkit-transform: translateZ(0);
              transform: translateZ(0);
    }
    100% {
      -webkit-transform: translateZ(160px);
              transform: translateZ(160px);
    }
  }