a {
            text-decoration: none;
            color: #000;
            cursor: pointer;


        }


        h1,
        h2,
        h3,
        p {
            font-family: Helvetica;
        }

        h1 {

            font-size: 3vw;

        }

        h2 {
            font-size: 2vw;
        }

        p {

            font-size: 1.5vw;
        }




        #collonne_gauche {
            top: 0px;
            left: 0px;
            position: fixed;
            width: 50vw;
            height: 100vh;


        }

        #collonne_droite {
            position: absolute;
            right: 0;
            top: 0px;
            width: 50vw;
            background-color: red;
        }

        #collonne_droite img{
            width: 100%;
}
        .projet {
            position: relative;
            width: 45vw;
            border-bottom: 1px solid #000;
            height: 5vw;
            transition: all 1s;
            overflow: hidden;
             padding: 1vw;
        }

        .projet:hover {

            height: 20vw;
        }

        .menu {
            position: relative;
            display: flex;
            align-items: baseline;
            width: 8vw;
            width: 35vw;
            height: auto;
           

        }

        .menu_item {
            padding-right: 1vw;


        }