.meny{
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: 200px;
    background: blueviolet;
    display: grid;
    grid-template-rows: 100px auto 100px;
    overflow: hidden;
}

.contents{
    background-color: white;
    position: relative;
    margin-left:200px;}
    

.submeny{
    overflow-y:auto;
    padding: 20px;
    background-color: purple;
}

.submeny nav{
    flex-direction: column;
    display: flex;

}

.submeny nav a{
    flex: 1;
    background-color:#0a0a23;
    color: #fff;
    border:none; 
    border-radius:10px; 
    padding:15px;
    min-height:30px; 
    min-width: 120px;
    margin: 10px;
   }