footer{
    background-color: #597855 ;
}

footer  img{
    width: 2.5vw;
}

footer p{
    font-size: 20px;
    text-align: left;
}

p{
    font-size: 22px;
}

h1, h2, p{
    text-align: center;
}

h1{
    font-size: 40px;
}

.liste_service li{
    font-size: 18px;
    text-align: center;
    list-style-type: none;
}

ul{
    margin-left: 280px;
}

body, .h2{
    font-family: "Comfortaa", sans-serif;
    font-style: normal;
    margin: 0;
    padding: 0;
    background-color: white;
}

header{
    font-size: 1.5vw;
    color: white;
    background-color: #313818;
}

.logo_otun{
    width: 12.5vw;
    justify-content: left;
    align-items: left;
}

.pic_gianluca{
    display: block;
    margin: auto;
    border-radius: 50px;
    width: 30vw;
}

.banniere{
    width: 1600px;
    height: 230px;
    max-width: 100%;
    height: auto;
}

a{
    text-decoration: none;
}

header{
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
}

header ul{
    float: right;
}

header ul li:hover{
    padding-bottom: 3px;
    border-bottom: 2px solid #fff;
}

header ul li{
    margin: 5px;
    list-style-type: none;
    display: inline;
    justify-content: center;
    align-items: center;
    transition: all 0.2s ease-in-out;
    border-bottom: 2px solid transparent;
}

header ul li a{
    color: white;  
}

header a img{
    float: left;
}

button{
    border: 0;
    background: transparent;
    color: white;
    position: relative;

}

h4,h3,h5{
    margin-bottom: -5px;
    font-size: 35px;
    text-align: center;
}

h3{
    margin-bottom: 3vw;
}

.fondateur{
    font-size: 25px;
    text-align: center;
    margin-right: 51px;
}

.partenaire{
    margin-left:144px ;
    width: 20vw;
}

.bouton button a{
    color: black;
}

button{
    font-family: "Comfortaa", sans-serif;
    font-style: normal;
    margin: auto;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: 20px 50px;
    border-radius: 30px;
    cursor: pointer;
    font-size: 1.5em;
    box-shadow: 0px -0px 0px 0px rgba(255, 139, 0, .5), 0px 0px 0px 0px rgba(255, 219, 0, .5);
    transition: all .2s;
}

button::after{
    content:"" ;
    width: 400px;
    height: 400px;
    background: linear-gradient(225deg, #ff8b00 0%, #ffbc00 50%, #FFDB00 100%);
    position: absolute;
    left: -75px;
    top: -100px;
    z-index: -1;
    transition: all .4s;
}

button:hover::after{
    transform: rotate(150deg);
}

button:hover{
    transform: translate(0,-6px);
    box-shadow: 10px -10px 25px 0 rgba(255, 139, 0, .25), -10px 10px 25px 0px rgba(39,200,255,.25);
}