* {
    font-family: "Montserrat", sans-serif;
    font-optical-sizing: auto;
    font-style: normal;
}

html {
    scroll-behavior: smooth;
}

.titre-fancy {
    font-family: "BBH Sans Bartle", sans-serif;
    font-weight: 400;
    font-style: normal;
    color: #fff;
    font-size: 7rem;
    margin-top: auto;
}

body {
    margin: 0;
    background-color: #343A40;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 30px;
    animation: fondu 1.5s linear;
    min-height: 10vh;
}

header div {
    background-color: #495057;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 40px;
    padding: 40px 50px;
    color: #fff;
}

header div a {
    color: #fff;
    text-decoration: none;
}

header div a:hover {
    text-decoration: underline;
}

.first {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 90vh;
    animation: fondu 1.5s linear;
}

@keyframes fondu {
    0% {
        opacity: 0;
    }
    100% {
        opacity: 1;
    }
}

.btn-sae {
    color: #fff;
    text-decoration: none;
}

.btn-sae {
    margin-top: auto;
    padding: 25px;
    margin-bottom: 5%;
    background-color: #495057;
    border-radius: 50px;
    position: relative;
}

@property --angle {
    syntax: "<angle>";
    initial-value: 0deg;
    inherits: false;
}

@keyframes rotate {
    from {
        --angle: 0deg;
    }

    to {
        --angle: 360deg;
    }
}

.btn-sae::before,
.btn-sae::after {
    content: '';
    position: absolute;
    height: 100%;
    width: 100%;
    background-image: conic-gradient(
        from var(--angle),
        transparent 70%,
        white
    );
    top: 50%;
    left: 50%;
    translate: -50% -50%;
    z-index: -1;
    padding: 5px;
    border-radius: 50px;
    animation: rotate 1.5s infinite linear;
}

div.container-sae::before {
    filter: blur(1.5rem);
    opacity: 0.5;
}

section.sae {
    min-height: 100vh;
    max-width: 100vw;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
}

div.container-sae {
    background-color: #495057;
    padding: 30px;
    margin: 60px;
    border-radius: 20px;
    box-shadow: 8px 8px 5px #fff;
    color: #fff;
    white-space: normal;
    overflow-wrap: break-word;
    min-height: 250px;
    display: flex;
    flex-direction: column;
}

div.ligne-bottom {
    display: flex;
    flex-direction: row;
}

.plus-btn {
    color: #fff;
    text-decoration: none;
    padding: 10px;
    margin: auto;
    border-radius: 10px;
    background-color: #6C757D;
    transition: .4s;
}

.plus-btn:hover {
    background-color: #495057;
    text-decoration: underline;
}

footer {
    display: flex;
    justify-content: space-around;
    align-items: center;
    background-color: #495057;
    min-height: fit-content;
    padding: 20px;
}

#iut {
    height: 80px;
}