body{
    margin: 0;
    background: linear-gradient(to left, hsl(261, 29%, 73%), rgb(109, 148, 187));
    font-family: 'Courier New', Courier, monospace;
    color: rgb(57, 66, 73);
    text-align: center;
}

.heading{
    color: rgb(2, 2, 138);
    text-align: center;
    padding-top: 20px;
    font-size: 35px;
}
.instruction{
    padding-bottom: 50px;
    color: rgb(82, 82, 122);
    justify-content: center;
    text-align: center;
    font-size: 18px;
}

.app{
    display: grid;
    grid-template-columns: repeat(auto-fill, 300px);
    gap: 40px;
    justify-content: center;
}
.note{
    background-color: rgba(255,255,255,0.4);
    padding: 20px;
    resize: none;
    box-shadow: 3px 3px 6px rgba(0,0,0,0.3);
    height : 200px;
    border-radius: 5px;
    min-width: 100px;
    min-height: 70px;
    max-width: 310px;
    max-height: 200px;
    color: darkblue;
    box-sizing: border-box;
    border: none;
    outline: none;
    font-size: large;

}

.note::placeholder{
    color:grey;
    opacity: 50%;
}
.note:hover, .note:focus{
    box-shadow: 0 0 10px rgba(0,0,0,.8);
    transition: all 300ms ease;
}
.btn{
    height:200px;
    border-color: rgba(255,255,255,0.3);
    background-color: rgba(255,255,255,0.2);
    border-radius: 15px;
    color: rgba(6, 6, 100, 0.3);
    box-shadow: 1px 1px 5px rgba(0,0,0,0.3);
    font-size: 50px;
}

.btn:hover{
    transition: all 290ms ease;
    box-shadow: 3px 3px 6px rgba(0,0,0,0.6);
    font-size: 60px;
    font-weight: bold;
    background-color: rgba(255,255,255,0.4);
    color: rgba(0, 0, 100, 0.3);
    cursor: pointer;
}