style.css

*{
    padding: 0;
    margin: 0 ;
    box-sizing: border-box;
}

#main{
    width: 100%;
    min-height: 100vh;
    background-color: #dfe6e9;
    display: flex;
    flex-wrap: wrap;
    padding-bottom: 90px;
}

#addBtn{
    position: fixed;
    right: 15px;
    top: 15px;
    background-color: #2d3436;
    color: white;
    border-radius: 10px;
    padding: 15px;
    font-size: 18px;
}

.note{
    width: 400px;
    height: 450px;
    background-color: aliceblue;
    margin: 90px;
    border-radius: 15px;
}

.tool{
    width: 100%;
    background-color: #636e72;
    color: white;
    padding: 10px;
    display: flex;
    justify-content: end;
    border-radius: 15px 15px 0px 0px;
    
}

.tool i{
    padding: 7px;
}

.note textarea{
    border: none;
    width: 100%;
    height: 100%;
    resize: none;
    padding: 10px;
    font-size: 17px;
    border-radius: 15px;
}
.note textarea focus{
    border: 0;
    outline: 0;

}