header {
    display: flex;
    flex-direction: row;
    justify-content: space-around;
    align-items: center;
    width: 100%;
    height: 100px;
    margin: auto;
    position: sticky;
    top: 0;
    background-color: white;
    z-index: 1000;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.animation {
    margin-right: 0.5rem;
    height: 3rem;
    animation-delay: 2s;
    animation: rotation;
    animation-duration: 12s;
    animation-iteration-count: infinite;
    animation-timing-function: linear;
    transition-timing-function: steps(2, end);
}

@keyframes rotation {
    0% {
        transform: rotate(0deg);
    }
    33% {
        transform: rotate(360deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.font-logo-1 {
    font-weight: 900;
    font-size: 25px;
}

.font-logo-2 {
    font-weight: 900;
    font-size: 25px;
}

nav ul {
    display: flex;
    flex-direction: row;
    list-style-type: none;
}

nav ul li {
    margin: 0 20px;
    font-weight: 700;
    text-decoration: none;
}

nav ul li a {

}

nav ul li a:hover {
    color: var(--teal3);
}

button {
    appearance: none;
    backface-visibility: hidden;
    border-radius: 10px;
    border-style: none;
    box-shadow: none;
    box-sizing: border-box;
    cursor: pointer;
    display: inline-block;
    font-size: 15px;
    height: 50px;
    letter-spacing: normal;
    line-height: 1.5;
    outline: none;
    overflow: hidden;
    padding: 14px 20px;
    position: relative;
    text-align: center;
    text-decoration: none;
    transform: translate3d(0, 0, 0);
    transition: all .3s;
    user-select: none;
    -webkit-user-select: none;
    touch-action: manipulation;
    vertical-align: top;
    white-space: nowrap;
    font-weight: 600;
}

button:hover {
    background-color: var(--teal4);
    box-shadow: rgba(0, 0, 0, .05) 0 5px 30px, rgba(0, 0, 0, .05) 0 1px 4px;
    opacity: 1;
    transform: translateY(0);
    transition-duration: .35s;
}

button:hover:after {
    opacity: .5;
}

button:active {
    box-shadow: rgba(0, 0, 0, .1) 0 3px 6px 0, rgba(0, 0, 0, .1) 0 0 10px 0, rgba(0, 0, 0, .1) 0 1px 4px -1px;
    transform: translateY(2px);
    transition-duration: .35s;
}

button:active:after {
    opacity: 1;
}

@media screen and (max-width: 1250px) {#nav-temoignages {display: none;}}
@media screen and (max-width: 1050px) {#nav-presentation {display: none;}}
@media screen and (max-width: 950px) {#nav-apropos {display: none;}}
@media screen and (max-width: 850px) {#nav-prestations {display: none;}}
@media screen and (max-width: 650px) {nav {display: none;}}
@media screen and (max-width: 570px) {#contact {display: none;}}