:root {
    --main-color: #3FC9EC;
}

body {
    padding: 0;
    margin: 0;
    background: #f2f6e9;
    /*scroll-snap-type: y proximity;*/
}
/*--- navigation bar ---*/
#top {
    /*position: fixed;*/
    width: 100%;
    z-index: 1;
}
.navbar {
    background: var(--main-color);
}
.nav-link,
.navbar-brand {
    color: #fff;
    cursor: pointer;
}
.nav-link {
    margin-right: 1em !important;
}
.nav-link:hover {
    color: #000;
}
.navbar-collapse {
    justify-content: flex-end;
}
.header {
    background-image: url('/img/it.jpg');
    background-size: cover;
    background-position: center;
    position: relative;
}
.overlay {
    position: absolute;
    min-height: 100%;
    min-width: 100%;
    left: 0;
    top: 0;
    background: rgba(0, 0, 0, 0.6);
}
.description {
    left: 50%;
    position: absolute;
    top: 45%;
    transform: translate(-50%, -55%);
    text-align: center;
}
.description h1 {
    color: var(--main-color);
}
.description p {
    color: #fff;
    font-size: 1.3rem;
    line-height: 1.5;
}
.description #descbt {
    border:1px solid var(--main-color);
    background: var(--main-color);
    border-radius: 0;
    color:#fff;
}
.description #descbt:hover {
    border:1px solid #fff;
    background:#fff;
    color:#000;
}
.features {
    margin: 4em auto;
    padding: 1em;
    position: relative;
}
.feature-title {
    color: #333;
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-transform: uppercase;
}
.features img {
    -webkit-box-shadow: 1px 1px 4px rgba(0, 0, 0, 0.4);
    -moz-box-shadow: 1px 1px 4px rgba(0, 0, 0, 0.4);
    box-shadow: 1px 1px 4px rgba(0, 0, 0, 0.4);
    margin-bottom: 16px;
}
.features .form-control,
.features input {
    border-radius: 0;
}
.features .btn {
    background-color: var(--main-color);
    border: 1px solid var(--main-color);
    color: #fff;
    margin-top: 20px;
}
.features .btn:hover {
    background-color: #333;
    border: 1px solid #333;
}
.page-footer {
    background-color: #222;
    color: #ccc;
    padding: 60px 0 30px;
}
.footer-copyright {
    color: #666;
    padding: 40px 0;
}
@media (max-width: 575.98px) {
    .description {
        left: 0;
        padding: 0 15px;
        position: absolute;
        top: 10%;
        transform: none;
        text-align: center;
    }

    #explications li,p {
        font-size: 0.75em;
    }

    #alertinfo h4,p{
        font-size: 1em;
    }

    .description h1 {
        font-size: 2em;
    }

    .description p {
        font-size: 1.2rem;
    }

    .features {
        margin: 0;
    }
    #logo {
        width: 100px;
        height: auto;
    }
}
html {
    scroll-behavior: smooth;
}
.sectiontitle {
    text-align: center;
    padding-top: 50px;
}
#logo {
    padding-bottom: 50px;
}
#expl li{
    color: #fff
}
#alertinfo {
    padding: 20px;
    text-align: center;
}
#explications {
    color: white;
    background-color: #013861;
    left: 0;
    min-width: 100%;
}
#explications .btn {
    background-color: var(--main-color);
    border: 1px solid var(--main-color);
    color: #fff;
    margin-top: 20px;
    border-radius: 0;
}
#explications .btn:hover {
    background-color: #333;
    border: 1px solid #333;
}
#btSites {
    text-align: center;
}
#explTitle {
    text-align: center;
    padding: 50px;
}
#fullscreen {
    color: white;
    animation: fadein 120s;
    -moz-animation: fadein 120s; /* Firefox */
    -webkit-animation: fadein 120s; /* Safari and Chrome */
    -o-animation: fadein 120s; /* Opera */
}
@keyframes fadein {
    from {
        opacity:0;
    }
    to {
        opacity:1;
    }
}
@-moz-keyframes fadein { /* Firefox */
    from {
        opacity:0;
    }
    to {
        opacity:1;
    }
}
@-webkit-keyframes fadein { /* Safari and Chrome */
    from {
        opacity:0;
    }
    to {
        opacity:1;
    }
}
@-o-keyframes fadein { /* Opera */
    from {
        opacity:0;
    }
    to {
        opacity: 1;
    }
}