body{
    margin: 0;
    background: lightseagreen;
}

#app{
    display: grid;
    grid-template-columns: repeat(auto-fill,200px);
    padding: 15px;
    gap: 14px;
}

.note{
    height: 200px;
    box-sizing: border-box;
    padding: 16px;
    border: none;
    border-radius: 10px;
    box-shadow: 0 0 7px rgba(0, 0, 0, 0.15);
    resize: none;
    font-family: sans-serif;
    font-size: 16px;
}

.add-note{
    height: 200px;
    border: none;
    outline: none;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 10px;
    font-size: 120px;
    color: rgba(0, 0, 0, 0.5);
    cursor: pointer;
    transition:  0.2s;
}

.add-note:hover{
    background: rgba(0, 0, 0, 0.4);
}

@media (max-width:500px){

   #app{
    padding: 20px;
    justify-content: center;
    align-items: center;
   }
}