/* RESET */

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

/* MOBILE FIRST */

body{

font-family:Arial, Helvetica, sans-serif;
background:#000;
color:#fff;
padding:15px;
line-height:1.6;

}

/* HEADER */

header{

max-width:900px;
margin:auto;
margin-bottom:20px;

}

h1{

margin-bottom:10px;
font-size:1.6rem;

}

input{

width:100%;
padding:10px;
border-radius:6px;
border:none;
margin-bottom:10px;

}

/* CONTEÚDO */

main{

max-width:900px;
margin:auto;

}

/* VIDEO */

.video-container{

width:100%;
margin-bottom:15px;

}

.video-container video{

width:100%;
height:auto;
display:block;
border-radius:8px;

}

/* EDITOR */

textarea{

width:100%;
height:150px;
padding:10px;
border-radius:6px;
border:none;
margin-bottom:10px;
resize:vertical;

}

/* BOTÃO */

button{

padding:10px 15px;
border:none;
border-radius:6px;
background:#4da3ff;
color:#fff;
cursor:pointer;

}

button:hover{

opacity:0.9;

}

/* LISTA DE NOTAS */

#listaNotas{

margin-top:20px;

}

.nota{

background:#111;
padding:15px;
border-radius:8px;
margin-bottom:10px;
white-space:pre-wrap;

}

/* TABLET */

@media (min-width:600px){

textarea{
height:200px;
}

}

/* DESKTOP */

@media (min-width:900px){

body{
padding:30px;
}

h1{
font-size:2rem;
}

}