html{
    overflow: overlay;
    scroll-behavior: smooth;
}

body{
    margin: 0;
    padding: 0;
}

.header{
    display: flex;
    align-items: center;
    justify-content: space-around;
    height: 100px;
}

#logo-entreprise{
    width: 210px;
    height: 30px;
}

.header hr{
    border-radius: 30px;
    background: black;
    width: 310px;
    border: none;
    height: 0.5px;
    margin-top: 15px;
    margin-bottom: 15px;
}

.header ul{
    list-style: none;
    margin: 0;
    padding: 0;
    font-family: 'Roboto';
    font-size: 14px;
}

.header li {
    display: inline;
    margin: 0px 10px;
    font-weight: 300;
}

.header li.active{
    color: #26a3c8;
    border-bottom: 2px solid #26a3c8;
    transform: none;
    font-weight: 400;
}

.header li:hover {
    cursor: pointer;
    color: #26a3c8;
    border-bottom: solid 2px #26a3c8; 
}

.header a{
    text-decoration: none;
    color: black !important;
}

.header a:visited{
    text-decoration: none;
    color: black;
}

.header hr {
    display: none;
}

@media (min-width: 1475px){
    .header ul {
        font-size: 20px;
    }
    #logo-entreprise{
        width: 290px;
        height: 40px;
        transform: scale(1.4);
        margin-left: -40px;
    }
}


@media (max-width: 1475px){
    .header ul {
        font-size: 16px;
    }

    #logo-entreprise{
        transform: scale(1.2);
        margin-left: 0px;
    }
}

@media (min-width: 992px) {

    .header{
        height: 130px;        
    }

}


.button {
    display: none;
    position: fixed;
    right: 65px;
    bottom: 150px;
    background-color: #0b2956;
    color: white;
    text-decoration: none;
    border-radius: 60px;
    height: 45px;
    display: inline-flex;
    align-items: center;
    overflow:hidden;
    width: auto;
    max-width: 45px; /** I'm animating max-width because width needs to be auto, and auto can't be animated **/
    -webkit-transition: max-width 0.5s;
    transition: max-width 0.5s;
    text-decoration: none;
  }
  
  .button:hover {
    max-width: 300px;
    text-decoration: none;
    color: white;
  }
  
  .icon-btn{
    font-family: 'Roboto';
    font-size: 16px;
    margin-right: 15px;
    padding-left: 14.5px;
    padding-right: 12px;
    display: flex;
    align-items: center;
    transform: scale(1.2);
  }
  
  .text {
    white-space: nowrap;
    padding-right: 15px;
  }
  
  .fond-ico{
    opacity: 0.1;
    position: absolute;
    height: 800px;
    margin-top: -447px;
    margin-left: -197px;
    z-index: -1;
  }

#fondlheader{
    top:0;
    left:0;
}

#logof1{
    top: 0;
    left: 0;
    margin-top: 986px;
    margin-left: 59px;
    height: 500px;
}

#logof2{
    top: 0;
    right: 0;
    margin-top: 1250px;
    margin-right: 95px;
    height: 500px;
}

#logof3{
    top: 0;
    margin-top: 1804px;
    margin-left: 250px;
    height: 200px;
    left: 0;
}


@media (max-width : 700px){
    .button{
        transform: scale(0.8);
        right: 20px;
        bottom: 166px;
    }

}

@media(max-width: 710px){
    .fond-ico{
        display: none;
    }

    #logo-entreprise{
        transform: scale(1);
        margin-left: 0px;
    }
}


@media(max-width: 610px){

    .header{
        flex-direction: column;
        justify-content: center;
    }

    .header hr{
        display: block;
    }

}

@media (max-width: 992px){
    .header ul li{
        margin: 0px 3px;
        font-size: 11px;
    } 
    .back-to-top {
      bottom: 15px;
    }
}

.back-to-top {
    position: fixed;
    display: none;
    background: #00133c;
    color: #fff;
    width: 44px;
    height: 44px;
    text-align: center;
    line-height: 1;
    font-size: 16px;
    border-radius: 50%;
    right: 66px;
    bottom: 75px;
    transition: 0.1s ease-in-out;
    z-index: 11;
  }
  
.back-to-top i {
    padding-top: 13px;
    color: #fff;
}