styles/main.css

.stSidebar {
   padding: 2px !important;
   background-color: #070E1C;
}

/*!* Icon *!*/
.stSidebar .icon {
   color: orange;
   font-size: 16px;
}

/*!* Nav link *!*/
.stSidebar .nav-link {
   font-size: 16px;
   text-align: left;
   margin: 0px;
}

/*!* Hover color *!*/
.stSidebar .nav-link:hover {
   --hover-color: #F30080;
}

/*!* Selected nav link *!*/
.stSidebar .nav-link-selected {
   background-color: #070E1C;
}
a {
   text-decoration: none;
   color: white !important;
   font-weight: 500;
}

a:hover {
   color: #d33682 !important;
   text-decoration: none;
}

ul {list-style-type: none;}

hr {
   margin-top: 0;
   margin-bottom: 5%;
}
h1 {
    background-color: #d60222;
    font-family: 'IRANSans', sans-serif;
    text-align: center;
    direction: rtl;
    padding-bottom: 30px;
}

body {
    background-color: #f0f2f6;
    font-family: 'IRANSans', sans-serif;
    text-align: right;
    direction: rtl;
    padding-top: 50px;
}

.stButton>button {
    background-color: #4CAF50;
    color: white;
    border-radius: 5px;
    padding: 1rem;
    margin: .5em !important;
}

MainMenu {visibility: hidden;}
footer {visibility: hidden;}
header {visibility: hidden;}