body{

font-family:Arial;

max-width:900px;

margin:auto;

background:#f3f3f3;

}



.header{

display:flex;

justify-content:space-between;

align-items:center;

}



.box,.post{

background:white;

padding:20px;

margin:15px 0;

border-radius:8px;

}



input,textarea{

width:95%;

padding:10px;

margin:5px;

}



textarea{

height:120px;

}



button{

padding:8px 15px;

cursor:pointer;

}



.comment{

background:#eee;

padding:8px;

margin:5px;

}