Estilos.css

* {
    box-sizing: border-box;
    margin: 0;

}

header{

    background-color: rgb(0, 0, 0);
    width: 100%;
}

main {

    background-color:rgb(255, 219, 198)
}
.logo {

    margin: 10px 20px 10px 10px;
}

.logo img {

    height: 80px;
}

header {

    display: flex;
    justify-content: space-between;

}

.Barra_de_navegacion {
    display: flex;
    align-items: center;

   margin-right: 20px;

}
.Barra_de_navegacion .Lista {
display: flex;
justify-content: space-around;
}

.Barra_de_navegacion  ul{

    display: inline-block;

}


.PanelNotas {

    
    display: inline;
    width: 20%;
    height: 88%;
    padding: 2rem;
    min-height: 100vh;
    
    
}


.ListaNotas {

    display: flex;
    flex-direction: column;

    
}
.PanelNotas .ListaNotas  li {

   display: inline;
   width: 50px;

}