index.css

@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@200;400&display=swap');


* {
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    padding: 3rem;
    background-color: #7bdaf3;
}

.add {
    position: fixed;
    top: 1rem;
    right: 1rem;
    background-color: #9ec862;
    border: none;
    border-radius: 3px;
    padding: 0.5rem 1rem;
    cursor: pointer;
}
.add:active {
    background-color: #3e8e41;
    box-shadow: 0 5px rgb(28, 199, 94);
    transform: translateY(4px);
}
.note {
    background-color: #fff;
    box-shadow: 0 0 10pz 4px rgba(0,0,0,0.1);
    margin: 30px 20px;
    height: 400px;
    width: 400px;
}

.note .tools {
    background-color: #9ec862;
    display: flex;
    justify-content: flex-end;
    padding: 0.5rem;
}

.note .tools button {
    background-color: transparent;
    border: none;
    color: white;
    cursor: pointer;
    font-size: 1rem;
    margin-left: 00.5rem;
}

.note textarea {
    outline: none;
    font-family: inherit;
    font-size: 1.2rem;
    border:none;
    height: 400px;
    width: 100%;
    padding: 20px;
}

.main {
    padding: 20px;
}

.hidden {
    display: none;
}