/* Mobile first 
body {
  font-size: 14px;
}*/

/* Mobile */

/*session-1*/
@media screen and (min-width: 300px) and (max-width: 430px) {
 section{
    padding: 140px 20px;
    height: 100%;
}
header {
    background-color: aliceblue;
    opacity: 0.85;
    width: 360px;
    position: fixed;
    z-index: 999;
    display: flex;    
    padding: 10px 10px;

}
.navigation a{
color:blueviolet;
/* background-color: aqua; */
text-decoration: none;
font-size: 1em;
font-weight: 500;
padding-left: 0px;
padding-bottom: 2px;

}
.navigation {
    align-content: end;
    /* background-color: rgb(76, 113, 113); */
    display: flex;
    flex-direction: column;
    align-items: end;       
}
.social-icons a{
    color: azure;
    font-size: 1.7em;
    padding-right: 15px;
    
}

.main h3 {
    color: aliceblue;
    font-size: 1.2em;
    font-weight: 400;
    letter-spacing: 1px;
    margin-top: 10px;
    margin-bottom: 10px;
}
.main h2 {
    color: rgb(255, 255, 255);
    font-size: 0.8em;
    font-weight: 500;
}
/* bouton inscription*/
.main-btn {
  color: rgb(23, 44, 62);
  background-color: rgb(191, 166, 23);
  text-decoration: none;
  font-size: 1em;
  font-weight: 600;
  padding: 0.9375em 2.18875em;
  letter-spacing: 1px;
  display: inline-block;
  border-radius: 15px;
  margin-bottom: 20px;
  transition: 0.5s;
}
.main-btn:hover{
    background-color: rgb(220, 200, 84);
    transform: scale(1.1);
}
.main span {
    display: inline-block;
    color: rgb(251, 251, 251);
    font-size: 1.4em;
    font-weight: 700;
    margin-top: 10px;
}
.main-div{
    padding: 50px;
    width: 500px;
    position: relative;
    }
.main-div::after {
    content: '';
    position: absolute;
    background: rgba(11, 65, 147, 0.8);
    border-radius: 30px;
    mix-blend-mode:darken;
    inset: 0;
    z-index: -1;

}

/*-session presantation-2*/

.pre{
    display: flex;
    flex-direction: column;
    flex-wrap: nowrap;
    height: 100%;
    
}
.pre-g{
    width: 100%;  
    background-repeat: no-repeat;
    background-attachment: fixed;
    border-radius: 15px;
    padding: 15px;
    margin: 5px;
    display: flex;
    flex-direction: column;
    
}
.pre-d{
    width: 100%;  
    background-color: #ffffff2b;
    backdrop-filter: blur(4px);
    box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.3);
    border-radius: 15px;
    padding: 25px;
    margin: 5px;
    display: flex;
    flex-direction: column;    
}


}


/* Desktop */
@media screen and (min-width: 800px) and (m-width: 1700px) {
/* section{
    padding: 10px 20px;
    height: 100%;
} */
}