body{
    background-color: rgb(0, 0, 16);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
h1{
    color:aliceblue;
}
#bouton_start {
    font-size: 4em;
    background-color: rgb(67, 137, 228);
    border-radius:10px;
    padding: 10px;
    transition-property: all;
    transition-duration: 0.6s;
}
#bouton_start:hover{
    background-color: rgba(67, 137, 228, 0.535);
    box-shadow: 6px 6px 0px rgba(0, 0, 0);
    cursor:pointer;   

}
#scene{
    display: flex;
    flex-direction: column;
    align-items: center;
}
#groupe_de_dino{
    display: flex;
    flex-direction: row;
}
.dino{
    font-size: 8em;
    animation-name: dance;
    animation-duration: 0.4s;
    animation-iteration-count: infinite;
    animation-timing-function:ease;
    animation-direction:alternate
   
}
#scene.hide{
    display :none;
}

.dino:nth-child(1){
    animation-delay: -0.7s;
    animation-duration: 0.3s;

}
.dino:nth-child(2){
    animation-delay: -0.4s;

}
.dino:nth-child(3){
    animation-delay: 0s;


}
@keyframes tourne {
    from { transform: rotate(0deg);}
    to   { transform: rotate(360deg);}
}
.disco{
    font-size: 4em;
    animation-name: tourne;
    animation-duration: 0.9s;
    animation-iteration-count: infinite;
    animation-timing-function:linear;
    animation-direction:normal
}
@keyframes dance {
    from { transform: translate(0,0);}
    to   { transform: translate(-0.2em,-0.5em);}
}