html {
    background-image: url("notes.jpg"); 
    height: 100%; 
    background-position: center; 
    background-size: cover; 
}

h1 {
    text-align: center; 
    font-family: 'Open Sans', sans-serif;    
    color: darkorange; 
    margin-right: 30px; 
    margin-top: 40px; 
    text-size-adjust: larger;
}

#form {
    text-align: center;
    margin-right: 30px;
}

ul {
    list-style-type: none;
    text-align: center;
    margin-right: 40px; 
    padding: 10px;
}

li:hover {

    background: orange; 
    border-style: solid; 
    border-color: darkslategray;
    border-radius: 10px; 
}

li {
    list-style-type: none;
    text-align: center;
    color: black; 
    font-family: 'Patrick Hand SC', cursive;
    margin: 10px; 
    text-size-adjust: 12px;
}

span {
    display: inline-block;
    margin: 10px; 
    padding: 10px; 
    background-color: darkslategray;
    border-style: solid; 
    border-radius: 10px; 
    color: white;
}

.deleted {
    color: white; 
}

#add {
    display: inline-block;
    background-color: darkorange;
    border-style: solid;
    border-color: darkslategrey;
    border-radius: 20px; 
    padding: 10px;
    margin: 10px; 
    color: white;
    text-align: center;
    text-decoration: none;
    font-size: 12px;
    
}
#category {
    margin: 10px; 
    border-radius: 20px;
    border-style: solid;
    border-color: darkslategrey
}
#task {
    margin: 10px; 
    border-radius: 20px;
    border-style: solid;
    border-color: darkslategrey;
}

@media screen and (max-width: 600px) { 

html {
    background-image: url("notes.jpg"); 
    height: 100%;
    width: 100%;
    background-position: center; 
    background-size: cover; 
}

#container {
    display: flex;
    flex-wrap: wrap;
}

h1 {
    margin-top: 40px; 
}

#form {
    display: inline-block;
    text-align: center;
    margin-right: 30px;
    margin-top: 10px; 
}

}