body {
    margin:0;
    padding:0;
}

.choixClPro {
    position:relative;
    margin-top:5em;
    margin-bottom: -35em;
    top:130%;
    left:6%;
    transform:translate(-50%,-50%);
    padding:0;
    display:flex;
}

.choixClPro .choix {
    list-style:none;
}

.choixClPro .choix a {
    display:block;
    position:relative;
    width: 200px;
    height:100px;
    line-height:100px;
    font-size:40px;
    text-align:center;
    text-decoration:none;
    color:#404040;
    margin: 0 30px;
    transition:.5s;
}



.choixClPro .choix a span {
    position:absolute;
    transition: transform .5s;
}
.choixClPro .choix a span:nth-child(1),
.choixClPro .choix a span:nth-child(3){
    /* choix de la longueur de la ligne horizontale */
    width:100%;
    height:3px;
    background:#404040;
}
.choixClPro .choix a span:nth-child(1) {
    top:0;
    left:0;
    transform-origin: right;
}
.choixClPro .choix a:hover span:nth-child(1) {
    transform: scaleX(0);
    transform-origin: left;
    transition:transform .5s;
}

.choixClPro .choix a span:nth-child(3) {
    bottom:0;
    left:0;
    transform-origin: left;
}
.choixClPro .choix a:hover span:nth-child(3) {
    transform: scaleX(0);
    transform-origin: right;
    transition:transform .5s;
}

.choixClPro .choix a span:nth-child(2),
.choixClPro .choix a span:nth-child(4){
    width:3px;
    height:100%;
    background:#404040;
}
.choixClPro .choix a span:nth-child(2) {
    top:0;
    left:0;
    transform:scale(0);
    transform-origin: bottom;
}

.choixClPro:hover {
    cursor: pointer;
}

.choixClPro .choix a:hover span:nth-child(2) {
    transform: scale(1);
    transform-origin: top;
    transition:transform .5s;
}
.choixClPro .choix a span:nth-child(4) {
    top:0;
    right:0;
    transform:scale(0);
    transform-origin: top;
}
.choixClPro .choix a:hover span:nth-child(4) {
    transform: scale(1);
    transform-origin: bottom;
    transition:transform .5s;
}

.service-override{
    padding-top: 8em;
    margin-top: 8em;
}




.facebook:hover {
    color: #3b5998;
}
.facebook:hover span {
    background: #3b5998;
}
.twitter:hover {
    color: #1da1f2;
}
.twitter:hover span {
    background: #1da1f2;
}
.instagram:hover {
    color: #c32aa3;
}
.instagram:hover span {
    background: #c32aa3;
}
.google:hover {
    color: #dd4b39;
}
.google:hover span {
    background: #dd4b39;
}
ul li a .twitter {
    color: #1da1f2;
}
ul li a:hover:nth-child(3) {
    color: #c32aa3;
}
ul li a:hover:nth-child(4) {
    color: #dd4b39;
}